CN114142080A - Ultra-capacity graphene battery and preparation method thereof - Google Patents
Ultra-capacity graphene battery and preparation method thereof Download PDFInfo
- Publication number
- CN114142080A CN114142080A CN202111408459.1A CN202111408459A CN114142080A CN 114142080 A CN114142080 A CN 114142080A CN 202111408459 A CN202111408459 A CN 202111408459A CN 114142080 A CN114142080 A CN 114142080A
- Authority
- CN
- China
- Prior art keywords
- lithium
- graphene battery
- mixture
- lithium metal
- graphene
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229910021389 graphene Inorganic materials 0.000 title claims abstract description 114
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 98
- 238000002360 preparation method Methods 0.000 title abstract description 16
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 107
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical group O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 62
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 46
- -1 fullerene compound Chemical class 0.000 claims abstract description 43
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 40
- 229910003472 fullerene Inorganic materials 0.000 claims abstract description 38
- 239000002096 quantum dot Substances 0.000 claims abstract description 31
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 31
- 229910052751 metal Inorganic materials 0.000 claims abstract description 29
- 239000002184 metal Substances 0.000 claims abstract description 29
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 23
- 125000003700 epoxy group Chemical group 0.000 claims abstract description 23
- 229920000877 Melamine resin Polymers 0.000 claims abstract description 18
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000010406 cathode material Substances 0.000 claims abstract description 14
- 239000007774 positive electrode material Substances 0.000 claims abstract description 9
- 150000001875 compounds Chemical class 0.000 claims abstract description 8
- 239000000203 mixture Substances 0.000 claims description 79
- 239000011248 coating agent Substances 0.000 claims description 43
- 238000000576 coating method Methods 0.000 claims description 43
- 238000002156 mixing Methods 0.000 claims description 42
- 238000000034 method Methods 0.000 claims description 36
- 239000007788 liquid Substances 0.000 claims description 24
- 239000002033 PVDF binder Substances 0.000 claims description 21
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 21
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 19
- 239000011889 copper foil Substances 0.000 claims description 19
- 239000000463 material Substances 0.000 claims description 19
- KFDQGLPGKXUTMZ-UHFFFAOYSA-N [Mn].[Co].[Ni] Chemical compound [Mn].[Co].[Ni] KFDQGLPGKXUTMZ-UHFFFAOYSA-N 0.000 claims description 15
- 230000008569 process Effects 0.000 claims description 15
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 14
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 claims description 14
- 239000006258 conductive agent Substances 0.000 claims description 14
- 238000001125 extrusion Methods 0.000 claims description 14
- 238000005096 rolling process Methods 0.000 claims description 14
- 239000002002 slurry Substances 0.000 claims description 14
- 238000003756 stirring Methods 0.000 claims description 14
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical class [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims description 13
- 239000003792 electrolyte Substances 0.000 claims description 12
- XMWRBQBLMFGWIX-UHFFFAOYSA-N C60 fullerene Chemical compound C12=C3C(C4=C56)=C7C8=C5C5=C9C%10=C6C6=C4C1=C1C4=C6C6=C%10C%10=C9C9=C%11C5=C8C5=C8C7=C3C3=C7C2=C1C1=C2C4=C6C4=C%10C6=C9C9=C%11C5=C5C8=C3C3=C7C1=C1C2=C4C6=C2C9=C5C3=C12 XMWRBQBLMFGWIX-UHFFFAOYSA-N 0.000 claims description 9
- 239000002131 composite material Substances 0.000 claims description 9
- OIFBSDVPJOWBCH-UHFFFAOYSA-N Diethyl carbonate Chemical compound CCOC(=O)OCC OIFBSDVPJOWBCH-UHFFFAOYSA-N 0.000 claims description 7
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 7
- 238000009998 heat setting Methods 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 7
- 235000011837 pasties Nutrition 0.000 claims description 7
- 238000002791 soaking Methods 0.000 claims description 7
- 239000002904 solvent Substances 0.000 claims description 7
- 238000001291 vacuum drying Methods 0.000 claims description 7
- 238000005406 washing Methods 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 238000009775 high-speed stirring Methods 0.000 claims description 6
- 239000000243 solution Substances 0.000 description 18
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 12
- 229910001416 lithium ion Inorganic materials 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 10
- 238000003860 storage Methods 0.000 description 4
- 239000010405 anode material Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000014759 maintenance of location Effects 0.000 description 3
- 229920000098 polyolefin Polymers 0.000 description 3
- 239000004593 Epoxy Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000010924 continuous production Methods 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 239000005486 organic electrolyte Substances 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 238000007142 ring opening reaction Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229910000572 Lithium Nickel Cobalt Manganese Oxide (NCM) Inorganic materials 0.000 description 1
- PFYQFCKUASLJLL-UHFFFAOYSA-N [Co].[Ni].[Li] Chemical compound [Co].[Ni].[Li] PFYQFCKUASLJLL-UHFFFAOYSA-N 0.000 description 1
- FBDMTTNVIIVBKI-UHFFFAOYSA-N [O-2].[Mn+2].[Co+2].[Ni+2].[Li+] Chemical compound [O-2].[Mn+2].[Co+2].[Ni+2].[Li+] FBDMTTNVIIVBKI-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- QHGJSLXSVXVKHZ-UHFFFAOYSA-N dilithium;dioxido(dioxo)manganese Chemical compound [Li+].[Li+].[O-][Mn]([O-])(=O)=O QHGJSLXSVXVKHZ-UHFFFAOYSA-N 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 description 1
- 230000003446 memory effect Effects 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/362—Composites
- H01M4/364—Composites as mixtures
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/483—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides for non-aqueous cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/50—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/52—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
- H01M4/583—Carbonaceous material, e.g. graphite-intercalation compounds or CFx
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/409—Separators, membranes or diaphragms characterised by the material
- H01M50/446—Composite material consisting of a mixture of organic and inorganic materials
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention discloses a super-capacity graphene battery which is characterized in that a positive electrode material of a lithium metal graphene battery is a nitrogen-doped nickel-cobalt-manganese-graphene-based compound; the cathode material of the lithium metal graphene battery is a titanium dioxide quantum dot/metal lithium/fullerene compound; the diaphragm of the lithium metal graphene battery is prepared from the following components in parts by weight: 50-60 parts of hyperbranched polyborosiloxane containing epoxy groups, 10-15 parts of melamine and 8-10 parts of nano calcium carbonate. The invention also provides a preparation method of the lithium metal graphene battery. The lithium metal graphene battery disclosed by the invention has the advantages of high theoretical specific capacity, good electrochemical stability, excellent high and low temperature resistance and excellent use safety.
Description
Technical Field
The invention relates to the technical field of batteries, in particular to an ultra-capacity graphene battery and a preparation method thereof.
Background
In recent years, with the development of science and technology and the increase of demand, lithium ion batteries have moved from electronic terminal equipment to electric automobiles
And the field of energy storage technology has become a necessity. The lithium ion battery has the advantages of high energy density and voltage, long cycle life, low self-discharge rate, no memory effect, stable discharge voltage, quick charge and discharge, environmental protection and the like, is a main choice of sustainable power batteries, and is known as an ideal power supply in the 21 st century.
The main constituent materials of the lithium ion battery include electrolyte, diaphragm material, anode and cathode material, etc. As a main body for storing lithium, anode and cathode materials play an important role in the lithium ion battery, the capacity of the lithium ion battery is one of important factors influencing the capacity of the battery, the performance of the lithium ion battery directly influences the capacity and the cycle service life of the lithium ion battery, and the cost of the lithium ion battery directly determines the cost of the battery. Currently, the cathode materials commercially used in lithium ion batteries for electric vehicles mainly include lithium iron phosphate, lithium manganate, and ternary materials including lithium nickel cobalt manganese oxide and lithium nickel cobalt aluminate. However, these existing cathode materials also have the defects of more or less low consistency and energy density, poor cycle performance and electrochemical stability, safety performance, cycle performance, low-temperature performance and the like, which require further improvement in a plurality of key technologies. The diaphragm material has double functions of transferring lithium ions and blocking the electronic conductivity of positive and negative electrodes in the lithium battery. However, the traditional polyolefin diaphragm has a low melting point, and can shrink after being heated, so that the contact short circuit of the positive electrode and the negative electrode of the battery is caused; in addition, the polyolefin diaphragm has poor wettability to electrolyte and low liquid absorption rate, thereby influencing the cycle performance of the battery.
Chinese patent document CN 109037560B relates to an ultra-capacity graphene battery and a graphene battery. The positive electrode of the lithium metal graphene battery is a graphene electrode made of sheet graphene, the negative electrode of the lithium metal graphene battery is lithium metal, an electrolyte of the lithium metal graphene battery is an organic solvent system, a diaphragm of the lithium metal graphene battery is a high-strength thin polyolefin porous membrane, the amount of the lithium metal is 1-2 times of the mass of the graphene electrode, and an organic electrolyte solution used in a loop forming process comprises an organic solvent and electrolyte salt. The high-voltage power supply has higher working voltage and specific energy, the open-circuit voltage is 2-4.2V, and the specific energy can reach 200-600 W.h/kg and 500-1000 W.h/L; the battery can work within the range of minus 40 to plus 50 ℃, the storage life of the battery is longer than 10 years at normal temperature, no gas is separated out in the storage and discharge processes, and the safety performance is better. However, the cycle performance, electrochemical stability, and high and low temperature resistance of the battery are in need of further improvement.
Therefore, how to provide a lithium ion battery with high theoretical specific capacity, good electrochemical stability, excellent high and low temperature resistance and excellent use safety is a difficult problem to be solved by researchers in the industry at present.
Disclosure of Invention
The invention mainly aims to provide a super-capacity graphene battery which has high theoretical specific capacity, good electrochemical stability, excellent high and low temperature resistance and excellent use safety. Meanwhile, the second purpose of the invention is to provide a preparation method of the lithium metal graphene battery, which has the advantages of simple process, small dependence on equipment, high preparation efficiency and suitability for continuous production.
In order to achieve the above purposes, the technical scheme adopted by the invention is as follows:
the super-capacity graphene battery is characterized in that a positive electrode material of the lithium metal graphene battery is a nitrogen-doped nickel-cobalt-manganese-graphene-based compound; the cathode material of the lithium metal graphene battery is a titanium dioxide quantum dot/metal lithium/fullerene compound; the diaphragm of the lithium metal graphene battery is prepared from the following components in parts by weight: 50-60 parts of hyperbranched polyborosiloxane containing epoxy groups, 10-15 parts of melamine and 8-10 parts of nano calcium carbonate.
Preferably, the nitrogen-doped nickel-cobalt-manganese-graphene-based composite is a mixture formed by uniformly mixing a nitrogen-doped nickel-cobalt-manganese ternary material and graphene according to a mass ratio of (3-5): 1.
Preferably, the nitrogen-doped nickel-cobalt-manganese ternary material is prepared according to the method of example 1 in chinese patent document CN 107565127B.
Preferably, the titanium dioxide quantum dot/metallic lithium/fullerene compound is a mixture formed by uniformly mixing the titanium dioxide quantum dot, the metallic lithium and the fullerene according to the mass ratio of 1 (4-6) to (0.3-0.6).
Preferably, the titanium dioxide quantum dots are prepared according to the method of example 1 in chinese patent document CN 108906013A.
Preferably, the electrolyte of the lithium metal graphene battery is a lithium hexafluorophosphate solution with the concentration of 0.8-1.2 mol/L.
Preferably, the solvent of the lithium hexafluorophosphate solution is a mixture formed by mixing ethylene carbonate and diethyl carbonate according to the mass ratio of 1 (3-5).
Preferably, the epoxy group-containing hyperbranched polyborosiloxane is prepared according to the method of example 1 in Chinese patent document CN 107868252B.
Preferably, the particle size of the nano calcium carbonate is 200-500 nm.
A second object of the present invention is to provide a method for preparing the lithium metal graphene battery, which includes the following steps:
step S1, uniformly mixing titanium dioxide quantum dot/metal lithium/fullerene compound, conductive agent Super P and polyvinylidene fluoride PVDF according to the mass ratio of 8:1:1, then dripping N-methyl pyrrolidone into the mixture, uniformly stirring the mixture to form viscous pasty viscous liquid, then uniformly coating the viscous liquid on copper foil through a coating machine, and compacting the viscous liquid until the coating surface density is 160-2Compacted density of 2.0-2.8g/cm3(ii) a Then continuously slitting and continuously rolling to obtain a positive pole piece;
step S2, uniformly mixing titanium dioxide quantum dot/metal lithium/fullerene compound, conductive agent Super P and PVDF according to the mass ratio of 8:1:1, then dripping N-methyl pyrrolidone into the mixture, uniformly stirring the mixture into viscous uniform stable slurry by using double-planet vacuum high-speed stirring equipment, and then stably and uniformly coating the prepared slurry on the surface of copper foil by using an extrusion type double-sided coating machine, wherein the coating surface density is 150-2The compacted density is 1.5-1.8g/cm3(ii) a Then continuously slitting and continuously rolling to obtain a negative pole piece;
step S3, uniformly mixing hyperbranched polyborosiloxane containing epoxy groups, melamine and nano calcium carbonate according to a weight ratio, carrying out melt extrusion and heat setting processes, then placing the mixture in a hydrochloric acid solution with a mass percentage concentration of 9-12% for soaking for 3-6 hours, taking out the mixture, washing the mixture for 3-6 times with water, finally placing the mixture in a vacuum drying oven at 90-95 ℃ for drying to constant weight, and finally obtaining the diaphragm;
and S4, assembling and injecting liquid to obtain the lithium metal graphene battery.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:
(1) according to the preparation method of the lithium metal graphene battery, provided by the invention, the conventional process route and production equipment are adopted, the capital investment is low, the original production line is not required to be modified, the preparation efficiency is high, and the preparation method is suitable for continuous production;
(2) according to the lithium metal graphene battery provided by the invention, the nitrogen-doped nickel-cobalt-manganese-graphene-based composite is used as a positive electrode material, the advantages of nitrogen-doped nickel-cobalt-manganese and graphene are combined, and the nitrogen-doped nickel-cobalt-manganese and graphene are mutually matched, so that the stability of the lithium metal graphene battery can be ensured under the combined action, the chargeability of the lithium metal graphene battery can be improved, the electrochemical performance of the lithium metal graphene battery is excellent, and the safety performance, the cycle performance and the low temperature resistance of the lithium metal graphene battery are good;
(3) according to the lithium metal graphene battery provided by the invention, the cathode material of the lithium metal graphene battery is a titanium dioxide quantum dot/metal lithium/fullerene compound, and through mutual cooperation and combined action of all components, the conductivity can be improved, so that the transmission and electron migration of lithium ions in the charging and discharging processes are enhanced, and the capacity retention rate and the electrochemical properties of multiplying power, circulation and the like of the material are obviously improved; the reversibility in the electrochemical process can be improved, and the problem of volume expansion generated in the lithium extraction and insertion process can be effectively relieved;
(4) the diaphragm of the lithium metal graphene battery provided by the invention is prepared from the following components in parts by weight: 50-60 parts of hyperbranched polyborosiloxane containing epoxy groups, 10-15 parts of melamine and 8-10 parts of nano calcium carbonate; the hyperbranched polyborosiloxane containing epoxy groups can perform an epoxy ring-opening reaction with amino groups on melamine to form a three-dimensional network structure, so that the comprehensive performance of the film is effectively improved; the formed membrane material has high melting point and good thermal stability, and the wettability of the diaphragm on electrolyte can be improved by hydroxyl groups formed by epoxy ring-opening reaction, so that the battery can be prevented, and the service life of the battery can be effectively prolonged;
(5) according to the lithium metal graphene battery provided by the invention, through the cooperation and interaction of the battery anode material, the battery cathode material, the diaphragm and the electrolyte, the prepared battery lithium metal graphene battery has the advantages of high theoretical specific capacity, good electrochemical stability, excellent high and low temperature resistance and excellent use safety.
Detailed Description
The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art.
Example 1
The super-capacity graphene battery is characterized in that a positive electrode material of the lithium metal graphene battery is a nitrogen-doped nickel-cobalt-manganese-graphene-based compound; the cathode material of the lithium metal graphene battery is a titanium dioxide quantum dot/metal lithium/fullerene compound; the diaphragm of the lithium metal graphene battery is prepared from the following components in parts by weight: 50 parts of hyperbranched polyborosiloxane containing epoxy groups, 10 parts of melamine and 8 parts of nano calcium carbonate.
The nitrogen-doped nickel-cobalt-manganese-graphene-based composite is a mixture formed by uniformly mixing a nitrogen-doped nickel-cobalt-manganese ternary material and graphene according to a mass ratio of 3: 1; the nitrogen-doped nickel-cobalt-manganese ternary material is prepared according to the method of the embodiment 1 in the Chinese patent document CN 107565127B.
The titanium dioxide quantum dot/metal lithium/fullerene compound is a mixture formed by uniformly mixing titanium dioxide quantum dots, metal lithium and fullerene according to the mass ratio of 1:4: 0.3; the titanium dioxide quantum dots are prepared according to the method of example 1 in Chinese patent document CN 108906013A.
The electrolyte of the lithium metal graphene battery is a lithium hexafluorophosphate solution with the concentration of 0.8 mol/L; the solvent of the lithium hexafluorophosphate solution is a mixture formed by mixing ethylene carbonate and diethyl carbonate according to the mass ratio of 1: 3; the hyperbranched polyborosiloxane containing the epoxy group is prepared according to the method of example 1 in Chinese patent document CN 107868252B; the particle size of the nano calcium carbonate is 200 nm.
The preparation method of the lithium metal graphene battery is characterized by comprising the following steps:
step S1, uniformly mixing titanium dioxide quantum dot/metal lithium/fullerene compound, conductive agent Super P and polyvinylidene fluoride PVDF according to the mass ratio of 8:1:1, then dripping N-methyl pyrrolidone into the mixture, uniformly stirring the mixture to form viscous pasty viscous liquid, then uniformly coating the viscous liquid on copper foil through a coating machine, and then compacting the copper foil, wherein the coating surface density is 160g/m2Compacted density of 2.0g/cm3(ii) a Then continuously slitting and continuously rolling to obtain a positive pole piece;
step S2, uniformly mixing titanium dioxide quantum dot/metal lithium/fullerene compound, conductive agent Super P and PVDF according to the mass ratio of 8:1:1, then dripping N-methyl pyrrolidone into the mixture, uniformly stirring the mixture into viscous uniform stable slurry by using double-planet vacuum high-speed stirring equipment, and then stably and uniformly coating the prepared slurry on the surface of copper foil by using an extrusion type double-sided coating machine, wherein the coating surface density is 150g/m2Compacted density 1.5g/cm3(ii) a Then continuously slitting and continuously rolling to obtain a negative pole piece;
step S3, uniformly mixing hyperbranched polyborosiloxane containing epoxy groups, melamine and nano calcium carbonate according to a weight ratio, carrying out melt extrusion and heat setting processes, then placing the mixture in a hydrochloric acid solution with a mass percentage concentration of 9% for soaking for 3 hours, then taking out the mixture, washing the mixture for 3 times with water, finally placing the mixture in a vacuum drying oven at 90 ℃ for drying until the weight is constant, and finally obtaining the diaphragm;
and S4, assembling and injecting liquid to obtain the lithium metal graphene battery.
Example 2
The super-capacity graphene battery is characterized in that a positive electrode material of the lithium metal graphene battery is a nitrogen-doped nickel-cobalt-manganese-graphene-based compound; the cathode material of the lithium metal graphene battery is a titanium dioxide quantum dot/metal lithium/fullerene compound; the diaphragm of the lithium metal graphene battery is prepared from the following components in parts by weight: 53 parts of hyperbranched polyborosiloxane containing epoxy groups, 11 parts of melamine and 8.5 parts of nano calcium carbonate.
The nitrogen-doped nickel-cobalt-manganese-graphene-based composite is a mixture formed by uniformly mixing a nitrogen-doped nickel-cobalt-manganese ternary material and graphene according to the mass ratio of 3.5: 1; the nitrogen-doped nickel-cobalt-manganese ternary material is prepared according to the method of the embodiment 1 in the Chinese patent document CN 107565127B.
The titanium dioxide quantum dot/metallic lithium/fullerene compound is a mixture formed by uniformly mixing titanium dioxide quantum dots, metallic lithium and fullerene according to the mass ratio of 1:4.5: 0.4; the titanium dioxide quantum dots are prepared according to the method of example 1 in Chinese patent document CN 108906013A.
The electrolyte of the lithium metal graphene battery is a lithium hexafluorophosphate solution with the concentration of 0.9 mol/L; the solvent of the lithium hexafluorophosphate solution is a mixture formed by mixing ethylene carbonate and diethyl carbonate according to the mass ratio of 1: 3.5.
The hyperbranched polyborosiloxane containing the epoxy group is prepared according to the method of example 1 in Chinese patent document CN 107868252B; the particle size of the nano calcium carbonate is 300 nm.
The preparation method of the lithium metal graphene battery is characterized by comprising the following steps:
step S1, uniformly mixing titanium dioxide quantum dot/metal lithium/fullerene compound, conductive agent Super P and polyvinylidene fluoride PVDF according to the mass ratio of 8:1:1, then dripping N-methyl pyrrolidone into the mixture, uniformly stirring the mixture to form viscous pasty viscous liquid, then uniformly coating the viscous liquid on copper foil through a coating machine, and compacting the copper foil, wherein the coating surface density is 180g/m2Compacted density 2.2g/cm3(ii) a Then continuously slitting and continuously rolling to obtain a positive pole piece;
step S2, uniformly mixing the titanium dioxide quantum dot/metal lithium/fullerene compound, the conductive agent Super P and PVDF according to the mass ratio of 8:1:1, then dripping N-methyl pyrrolidone into the mixture, and using a double-planet vacuum high-speed mixer to mix the mixtureStirring the mixture evenly by a stirring device to form viscous uniform and stable slurry, and then stably and uniformly coating the prepared slurry on the surface of the copper foil by adopting an extrusion type double-sided coating machine, wherein the coating surface density is 170g/m2Compacted density 1.6g/cm3(ii) a Then continuously slitting and continuously rolling to obtain a negative pole piece;
step S3, uniformly mixing hyperbranched polyborosiloxane containing epoxy groups, melamine and nano calcium carbonate according to a weight ratio, carrying out melt extrusion and heat setting processes, then placing the mixture in a hydrochloric acid solution with a mass percentage concentration of 10% for soaking for 4 hours, then taking out the mixture, washing the mixture for 4 times with water, finally placing the mixture in a vacuum drying oven at 92 ℃ for drying until the weight is constant, and finally obtaining the diaphragm;
and S4, assembling and injecting liquid to obtain the lithium metal graphene battery.
Example 3
The super-capacity graphene battery is characterized in that a positive electrode material of the lithium metal graphene battery is a nitrogen-doped nickel-cobalt-manganese-graphene-based compound; the cathode material of the lithium metal graphene battery is a titanium dioxide quantum dot/metal lithium/fullerene compound; the diaphragm of the lithium metal graphene battery is prepared from the following components in parts by weight: 55 parts of hyperbranched polyborosiloxane containing epoxy groups, 13 parts of melamine and 9 parts of nano calcium carbonate.
The nitrogen-doped nickel-cobalt-manganese-graphene-based composite is a mixture formed by uniformly mixing a nitrogen-doped nickel-cobalt-manganese ternary material and graphene according to a mass ratio of 4: 1; the nitrogen-doped nickel-cobalt-manganese ternary material is prepared according to the method of the embodiment 1 in the Chinese patent document CN 107565127B.
The titanium dioxide quantum dot/metal lithium/fullerene compound is a mixture formed by uniformly mixing titanium dioxide quantum dots, metal lithium and fullerene according to the mass ratio of 1:5: 0.45; the titanium dioxide quantum dots are prepared according to the method of example 1 in Chinese patent document CN 108906013A.
The electrolyte of the lithium metal graphene battery is a lithium hexafluorophosphate solution with the concentration of 1 mol/L; the solvent of the lithium hexafluorophosphate solution is a mixture formed by mixing ethylene carbonate and diethyl carbonate according to the mass ratio of 1: 4; the hyperbranched polyborosiloxane containing the epoxy group is prepared according to the method of example 1 in Chinese patent document CN 107868252B; the particle size of the nano calcium carbonate is 350 nm.
The preparation method of the lithium metal graphene battery is characterized by comprising the following steps:
step S1, uniformly mixing titanium dioxide quantum dot/metal lithium/fullerene compound, conductive agent Super P and polyvinylidene fluoride PVDF according to the mass ratio of 8:1:1, then dripping N-methyl pyrrolidone into the mixture, uniformly stirring the mixture to form viscous pasty viscous liquid, then uniformly coating the viscous liquid on copper foil through a coating machine, and then compacting the copper foil, wherein the coating surface density is 210g/m2Compacted density of 2.5g/cm3(ii) a Then continuously slitting and continuously rolling to obtain a positive pole piece;
step S2, uniformly mixing titanium dioxide quantum dot/metal lithium/fullerene compound, conductive agent Super P and PVDF according to the mass ratio of 8:1:1, then dripping N-methyl pyrrolidone into the mixture, uniformly stirring the mixture into viscous uniform stable slurry by using double-planet vacuum high-speed stirring equipment, and then stably and uniformly coating the prepared slurry on the surface of copper foil by using an extrusion type double-sided coating machine, wherein the coating surface density is 190g/m2Compacted density 1.65g/cm3(ii) a Then continuously slitting and continuously rolling to obtain a negative pole piece;
step S3, uniformly mixing hyperbranched polyborosiloxane containing epoxy groups, melamine and nano calcium carbonate according to a weight ratio, carrying out melt extrusion and heat setting processes, then placing the mixture in a hydrochloric acid solution with a mass percentage concentration of 10.5% for soaking for 5 hours, then taking out the mixture, washing the mixture for 5 times with water, finally placing the mixture in a vacuum drying oven at 93 ℃ for drying until the weight is constant, and finally obtaining the diaphragm;
and S4, assembling and injecting liquid to obtain the lithium metal graphene battery.
Example 4
The super-capacity graphene battery is characterized in that a positive electrode material of the lithium metal graphene battery is a nitrogen-doped nickel-cobalt-manganese-graphene-based compound; the cathode material of the lithium metal graphene battery is a titanium dioxide quantum dot/metal lithium/fullerene compound; the diaphragm of the lithium metal graphene battery is prepared from the following components in parts by weight: 58 parts of hyperbranched polyborosiloxane containing epoxy groups, 14 parts of melamine and 9.5 parts of nano calcium carbonate.
The nitrogen-doped nickel-cobalt-manganese-graphene-based composite is a mixture formed by uniformly mixing a nitrogen-doped nickel-cobalt-manganese ternary material and graphene according to a mass ratio of 4.5: 1; the nitrogen-doped nickel-cobalt-manganese ternary material is prepared according to the method of the embodiment 1 in the Chinese patent document CN 107565127B.
The titanium dioxide quantum dot/metallic lithium/fullerene compound is a mixture formed by uniformly mixing titanium dioxide quantum dots, metallic lithium and fullerene according to the mass ratio of 1:5.5: 0.55; the titanium dioxide quantum dots are prepared according to the method of example 1 in Chinese patent document CN 108906013A; the electrolyte of the lithium metal graphene battery is a lithium hexafluorophosphate solution with the concentration of 1.1 mol/L; the solvent of the lithium hexafluorophosphate solution is a mixture formed by mixing ethylene carbonate and diethyl carbonate according to the mass ratio of 1: 4.5.
The hyperbranched polyborosiloxane containing the epoxy group is prepared according to the method of example 1 in Chinese patent document CN 107868252B; the particle size of the nano calcium carbonate is 450 nm.
The preparation method of the lithium metal graphene battery is characterized by comprising the following steps:
step S1, uniformly mixing titanium dioxide quantum dot/metal lithium/fullerene compound, conductive agent Super P and polyvinylidene fluoride PVDF according to the mass ratio of 8:1:1, then dripping N-methyl pyrrolidone into the mixture, uniformly stirring the mixture to form viscous pasty viscous liquid, then uniformly coating the viscous liquid on copper foil through a coating machine, and compacting the copper foil, wherein the coating surface density is 250g/m2Compacted density 2.7g/cm3(ii) a Then continuously slitting and continuously rolling to obtain a positive pole piece;
step S2, uniformly mixing titanium dioxide quantum dot/metal lithium/fullerene compound, conductive agent Super P and PVDF according to the mass ratio of 8:1:1, then dripping N-methyl pyrrolidone into the mixture, uniformly stirring the mixture into viscous uniform stable slurry by using double-planet vacuum high-speed stirring equipment, then stably and uniformly coating the prepared slurry on the surface of copper foil by using an extrusion type double-sided coating machine, and coating the coating surfaceDensity 210g/m2Compacted density 1.75g/cm3(ii) a Then continuously slitting and continuously rolling to obtain a negative pole piece;
step S3, uniformly mixing hyperbranched polyborosiloxane containing epoxy groups, melamine and nano calcium carbonate according to a weight ratio, carrying out melt extrusion and heat setting processes, then placing the mixture in a hydrochloric acid solution with a mass percentage concentration of 11% for soaking for 5.5 hours, then taking out the mixture, washing the mixture for 5 times with water, finally placing the mixture in a vacuum drying oven at 94 ℃ for drying until the weight is constant, and finally obtaining the diaphragm;
and S4, assembling and injecting liquid to obtain the lithium metal graphene battery.
Example 5
The super-capacity graphene battery is characterized in that a positive electrode material of the lithium metal graphene battery is a nitrogen-doped nickel-cobalt-manganese-graphene-based compound; the cathode material of the lithium metal graphene battery is a titanium dioxide quantum dot/metal lithium/fullerene compound; the diaphragm of the lithium metal graphene battery is prepared from the following components in parts by weight: 60 parts of hyperbranched polyborosiloxane containing epoxy groups, 15 parts of melamine and 10 parts of nano calcium carbonate.
The nitrogen-doped nickel-cobalt-manganese-graphene-based composite is a mixture formed by uniformly mixing a nitrogen-doped nickel-cobalt-manganese ternary material and graphene according to a mass ratio of 5: 1; the nitrogen-doped nickel-cobalt-manganese ternary material is prepared according to the method of the embodiment 1 in the Chinese patent document CN 107565127B.
The titanium dioxide quantum dot/metal lithium/fullerene compound is a mixture formed by uniformly mixing titanium dioxide quantum dots, metal lithium and fullerene according to the mass ratio of 1:6: 0.6; the titanium dioxide quantum dots are prepared according to the method of example 1 in Chinese patent document CN 108906013A.
The electrolyte of the lithium metal graphene battery is a lithium hexafluorophosphate solution with the concentration of 1.2 mol/L; the solvent of the lithium hexafluorophosphate solution is a mixture formed by mixing ethylene carbonate and diethyl carbonate according to the mass ratio of 1: 5; the hyperbranched polyborosiloxane containing the epoxy group is prepared according to the method of example 1 in Chinese patent document CN 107868252B; the particle size of the nano calcium carbonate is 500 nm.
The preparation method of the lithium metal graphene battery is characterized by comprising the following steps:
step S1, uniformly mixing titanium dioxide quantum dot/metal lithium/fullerene compound, conductive agent Super P and polyvinylidene fluoride PVDF according to the mass ratio of 8:1:1, then dripping N-methyl pyrrolidone into the mixture, uniformly stirring the mixture to form viscous pasty viscous liquid, then uniformly coating the viscous liquid on copper foil through a coating machine, and then compacting the copper foil, wherein the coating surface density is 260g/m2Compacted density of 2.8g/cm3(ii) a Then continuously slitting and continuously rolling to obtain a positive pole piece;
step S2, uniformly mixing titanium dioxide quantum dot/metal lithium/fullerene compound, conductive agent Super P and PVDF according to the mass ratio of 8:1:1, then dripping N-methyl pyrrolidone into the mixture, uniformly stirring the mixture into viscous uniform stable slurry by using double-planet vacuum high-speed stirring equipment, and then stably and uniformly coating the prepared slurry on the surface of copper foil by using an extrusion type double-sided coating machine, wherein the coating surface density is 220g/m2Compacted density 1.8g/cm3(ii) a Then continuously slitting and continuously rolling to obtain a negative pole piece;
step S3, uniformly mixing hyperbranched polyborosiloxane containing epoxy groups, melamine and nano calcium carbonate according to a weight ratio, carrying out melt extrusion and heat setting processes, then placing the mixture in a hydrochloric acid solution with the mass percentage concentration of 12% for soaking for 6 hours, then taking out the mixture, washing the mixture for 6 times with water, finally placing the mixture in a vacuum drying oven for drying at 95 ℃ to constant weight, and finally obtaining the diaphragm;
and S4, assembling and injecting liquid to obtain the lithium metal graphene battery.
Comparative example 1
The present example provides an ultra-capacity graphene battery, which has a formulation and a preparation method substantially the same as those of example 1, except that no titanium dioxide quantum dots are added.
Comparative example 2
This example provides an ultracapacitor cell that is formulated and prepared in substantially the same manner as in example 1, except that no fullerene is added.
Comparative example 3
This example provides an ultra-capacity graphene battery that is substantially the same in formulation and preparation as example 1, except that no melamine is added.
The lithium metal graphene batteries described in examples 1 to 5 and comparative examples 1 to 3 were charged at a rate of 1.0C and discharged at a rate of 1.0C at a temperature of 25 ± 3 ℃, and were subjected to cycle performance tests, the test results of which are shown in table 1.
TABLE 1
| Item | Cycle performance (capacity retention after 500 cycles)% | Energy Density (Wh/kg) |
| Example 1 | 97.1 | 184.3 |
| Example 2 | 97.3 | 184.7 |
| Example 3 | 97.4 | 184.9 |
| Example 4 | 97.7 | 185.3 |
| Example 5 | 97.9 | 185.5 |
| Comparative example 1 | 93.4 | 149.4 |
| Comparative example 2 | 93.9 | 150.6 |
| Comparative example 3 | 96.2 | 174.8 |
As can be seen from table 1, compared with the comparative example, the lithium metal graphene battery disclosed in the embodiment of the present invention has cycle performance (capacity retention rate after 500 cycles) of not less than 97.1%, and the comparative example is not more than 96.2%; the energy density is more than or equal to 184.3Wh/kg, and the comparative example is less than or equal to 174.8 Wh/kg; therefore, the example products have more excellent electrochemical stability, cycle performance and electrical performance.
Tests show that the product in the embodiment 1-5 can work within the range of-50 to +60 ℃, the storage life of the battery at normal temperature exceeds 12 years, no gas is separated out in the storage and discharge processes, and the safety performance is good.
The foregoing is directed to embodiments of the present invention and, more particularly, to a method and apparatus for controlling a power converter in a power converter, including a power converter, a display and a display panel.
Claims (7)
1. The super-capacity graphene battery is characterized in that a positive electrode material of the lithium metal graphene battery is a nitrogen-doped nickel-cobalt-manganese-graphene-based compound; the cathode material of the lithium metal graphene battery is a titanium dioxide quantum dot/metal lithium/fullerene compound; the diaphragm of the lithium metal graphene battery is prepared from the following components in parts by weight: 50-60 parts of hyperbranched polyborosiloxane containing epoxy groups, 10-15 parts of melamine and 8-10 parts of nano calcium carbonate.
2. The super-capacity graphene battery according to claim 1, wherein the nitrogen-doped nickel-cobalt-manganese-graphene-based composite is a mixture formed by uniformly mixing a nitrogen-doped nickel-cobalt-manganese ternary material and graphene according to a mass ratio of (3-5): 1.
3. The super-capacity graphene battery according to claim 1, wherein the titanium dioxide quantum dot/metallic lithium/fullerene composite is a mixture formed by uniformly mixing titanium dioxide quantum dots, metallic lithium and fullerene according to a mass ratio of 1 (4-6) to (0.3-0.6).
4. The super-capacity graphene battery according to claim 1, wherein the electrolyte of the lithium metal graphene battery is a lithium hexafluorophosphate solution with a concentration of 0.8-1.2 mol/L.
5. The super-capacity graphene battery according to claim 4, wherein the solvent of the lithium hexafluorophosphate solution is a mixture formed by mixing ethylene carbonate and diethyl carbonate according to a mass ratio of 1 (3-5).
6. The super-capacity graphene battery according to claim 1, wherein the particle size of the nano calcium carbonate is 200-500 nm.
7. A method for preparing a lithium metal graphene battery according to any one of claims 1 to 6, comprising the steps of:
step S1, uniformly mixing titanium dioxide quantum dot/metal lithium/fullerene compound, conductive agent Super P and polyvinylidene fluoride PVDF according to the mass ratio of 8:1:1, then dripping N-methyl pyrrolidone into the mixture, uniformly stirring the mixture to form viscous pasty viscous liquid, then uniformly coating the viscous liquid on copper foil through a coating machine, and compacting the viscous liquid until the coating surface density is 160-2Compacted density of 2.0-2.8g/cm3(ii) a Then continuously slitting and continuously rolling to obtain a positive pole piece;
step S2, uniformly mixing titanium dioxide quantum dot/metal lithium/fullerene compound, conductive agent Super P and PVDF according to the mass ratio of 8:1:1, then dripping N-methyl pyrrolidone into the mixture, uniformly stirring the mixture into viscous uniform stable slurry by using double-planet vacuum high-speed stirring equipment, and then stably and uniformly coating the prepared slurry on the surface of copper foil by using an extrusion type double-sided coating machine, wherein the coating surface density is 150-2The compacted density is 1.5-1.8g/cm3(ii) a Then continuously slitting and continuously rolling to obtain a negative pole piece;
step S3, uniformly mixing hyperbranched polyborosiloxane containing epoxy groups, melamine and nano calcium carbonate according to a weight ratio, carrying out melt extrusion and heat setting processes, then placing the mixture in a hydrochloric acid solution with a mass percentage concentration of 9-12% for soaking for 3-6 hours, taking out the mixture, washing the mixture for 3-6 times with water, finally placing the mixture in a vacuum drying oven at 90-95 ℃ for drying to constant weight, and finally obtaining the diaphragm;
and S4, assembling and injecting liquid to obtain the lithium metal graphene battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111408459.1A CN114142080B (en) | 2021-11-25 | 2021-11-25 | Super-capacity graphene battery and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111408459.1A CN114142080B (en) | 2021-11-25 | 2021-11-25 | Super-capacity graphene battery and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114142080A true CN114142080A (en) | 2022-03-04 |
| CN114142080B CN114142080B (en) | 2024-04-05 |
Family
ID=80391478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111408459.1A Active CN114142080B (en) | 2021-11-25 | 2021-11-25 | Super-capacity graphene battery and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114142080B (en) |
Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102569761A (en) * | 2010-12-08 | 2012-07-11 | 中国科学院金属研究所 | Titanium dioxide/graphene nanocomposite material and preparation method and application thereof |
| CN105000548A (en) * | 2014-04-22 | 2015-10-28 | 中国科学院苏州纳米技术与纳米仿生研究所 | Preparation method of novel three-dimensional nitrogen doped graphene composite material system |
| CN105551815A (en) * | 2016-02-02 | 2016-05-04 | 中国科学院青岛生物能源与过程研究所 | Lithium ion capacitor and fabrication method thereof |
| CN105742073A (en) * | 2015-12-17 | 2016-07-06 | 中国科学技术大学 | Graphene-based composite and preparation method thereof |
| WO2016110134A1 (en) * | 2015-01-06 | 2016-07-14 | 宁波南车新能源科技有限公司 | Novel battery capacitor based on composite anode and cathode material |
| WO2016202173A1 (en) * | 2015-06-15 | 2016-12-22 | 山东玉皇新能源科技有限公司 | Method for preparing high-purity lithium titanate negative electrode material and use thereof |
| WO2017005078A1 (en) * | 2015-07-09 | 2017-01-12 | 山东玉皇新能源科技有限公司 | Ternary material coated with three-dimensional network structure of coupled carbon nanotube-graphene composite and manufacturing method thereof |
| CN106558729A (en) * | 2016-11-10 | 2017-04-05 | 浙江超威创元实业有限公司 | A kind of lithium ion battery of Graphene as anode sizing agent conductive agent |
| CN107369836A (en) * | 2017-08-06 | 2017-11-21 | 长沙善道新材料科技有限公司 | Positive electrode and preparation method thereof, the lithium ion battery containing positive electrode |
| CN107546376A (en) * | 2017-06-27 | 2018-01-05 | 中国第汽车股份有限公司 | A kind of Graphene electrodes and preparation method thereof |
| CN107565127A (en) * | 2017-08-31 | 2018-01-09 | 福建师范大学 | The preparation method of nitrating nickel-cobalt-manganese ternary material |
| CN108906013A (en) * | 2018-07-23 | 2018-11-30 | 合肥工业大学 | A kind of method that ultrasonication prepares titanium dioxide quantum dot |
| CN109037560A (en) * | 2018-08-02 | 2018-12-18 | 盐城市新能源化学储能与动力电源研究中心 | lithium metal graphene battery and graphene battery |
| CN109818044A (en) * | 2019-01-25 | 2019-05-28 | 江苏润寅石墨烯科技有限公司 | A kind of graphene lithium battery positive and negative anodes proportioning process |
| KR20200000850A (en) * | 2018-06-22 | 2020-01-06 | 한국생산기술연구원 | CATHODE COMPOSITE MATERIAL FOR All SOLID LITHIUM SECONDARY BATTERY, METHOD FOR PREPARING THE SAME AND ALL SOLID LITHIUM SECONDARY BATTERY COMPRISING THE SAME |
| CN110690394A (en) * | 2019-10-24 | 2020-01-14 | 湖南辰砾新材料有限公司 | Lithium battery diaphragm and preparation method thereof |
| CN111082135A (en) * | 2019-12-26 | 2020-04-28 | 成都新柯力化工科技有限公司 | Preparation method of solid polymer electrolyte membrane of lithium battery |
| WO2020168975A1 (en) * | 2019-02-22 | 2020-08-27 | 叶小剑 | Lithium polymer battery and preparation method therefor |
-
2021
- 2021-11-25 CN CN202111408459.1A patent/CN114142080B/en active Active
Patent Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102569761A (en) * | 2010-12-08 | 2012-07-11 | 中国科学院金属研究所 | Titanium dioxide/graphene nanocomposite material and preparation method and application thereof |
| CN105000548A (en) * | 2014-04-22 | 2015-10-28 | 中国科学院苏州纳米技术与纳米仿生研究所 | Preparation method of novel three-dimensional nitrogen doped graphene composite material system |
| WO2016110134A1 (en) * | 2015-01-06 | 2016-07-14 | 宁波南车新能源科技有限公司 | Novel battery capacitor based on composite anode and cathode material |
| WO2016202173A1 (en) * | 2015-06-15 | 2016-12-22 | 山东玉皇新能源科技有限公司 | Method for preparing high-purity lithium titanate negative electrode material and use thereof |
| WO2017005078A1 (en) * | 2015-07-09 | 2017-01-12 | 山东玉皇新能源科技有限公司 | Ternary material coated with three-dimensional network structure of coupled carbon nanotube-graphene composite and manufacturing method thereof |
| CN105742073A (en) * | 2015-12-17 | 2016-07-06 | 中国科学技术大学 | Graphene-based composite and preparation method thereof |
| CN105551815A (en) * | 2016-02-02 | 2016-05-04 | 中国科学院青岛生物能源与过程研究所 | Lithium ion capacitor and fabrication method thereof |
| CN106558729A (en) * | 2016-11-10 | 2017-04-05 | 浙江超威创元实业有限公司 | A kind of lithium ion battery of Graphene as anode sizing agent conductive agent |
| CN107546376A (en) * | 2017-06-27 | 2018-01-05 | 中国第汽车股份有限公司 | A kind of Graphene electrodes and preparation method thereof |
| CN107369836A (en) * | 2017-08-06 | 2017-11-21 | 长沙善道新材料科技有限公司 | Positive electrode and preparation method thereof, the lithium ion battery containing positive electrode |
| CN107565127A (en) * | 2017-08-31 | 2018-01-09 | 福建师范大学 | The preparation method of nitrating nickel-cobalt-manganese ternary material |
| KR20200000850A (en) * | 2018-06-22 | 2020-01-06 | 한국생산기술연구원 | CATHODE COMPOSITE MATERIAL FOR All SOLID LITHIUM SECONDARY BATTERY, METHOD FOR PREPARING THE SAME AND ALL SOLID LITHIUM SECONDARY BATTERY COMPRISING THE SAME |
| CN108906013A (en) * | 2018-07-23 | 2018-11-30 | 合肥工业大学 | A kind of method that ultrasonication prepares titanium dioxide quantum dot |
| CN109037560A (en) * | 2018-08-02 | 2018-12-18 | 盐城市新能源化学储能与动力电源研究中心 | lithium metal graphene battery and graphene battery |
| CN109818044A (en) * | 2019-01-25 | 2019-05-28 | 江苏润寅石墨烯科技有限公司 | A kind of graphene lithium battery positive and negative anodes proportioning process |
| WO2020168975A1 (en) * | 2019-02-22 | 2020-08-27 | 叶小剑 | Lithium polymer battery and preparation method therefor |
| CN110690394A (en) * | 2019-10-24 | 2020-01-14 | 湖南辰砾新材料有限公司 | Lithium battery diaphragm and preparation method thereof |
| CN111082135A (en) * | 2019-12-26 | 2020-04-28 | 成都新柯力化工科技有限公司 | Preparation method of solid polymer electrolyte membrane of lithium battery |
Non-Patent Citations (1)
| Title |
|---|
| 袁菁菁;董国材;刘兵;: "石墨烯改性富锂镍钴锰酸锂正极材料的制备及表征", 化工新型材料, no. 10, 15 October 2015 (2015-10-15), pages 91 - 97 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114142080B (en) | 2024-04-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106450102B (en) | Lithium-sulfur cell of the graphite modified diaphragm for lithium-sulfur cell and preparation method thereof with composition | |
| CN103400962A (en) | Spherical LiFePO4/(C+La2/3-xLi3xTiO3) composite anode material and preparation method thereof | |
| CN105552324A (en) | Preparation method for lithium iron phosphate coated lithium nickel cobalt manganese composite material | |
| EP2658009A1 (en) | Electrode plate, preparing method therefor, super capacitor and lithium ion battery | |
| CN109037594B (en) | Self-healing polymer modified alkali metal negative electrode and preparation method and application thereof | |
| CN109616654B (en) | C/Si/SiOxMaterial, preparation method and application thereof | |
| CN101662022A (en) | Nano coating of negative electrode materials and preparation method of secondary aluminium cell using negative electrode materials | |
| CN111430687B (en) | Carbon-coated lithium iron phosphate composite material, preparation method thereof and lithium ion battery | |
| CN113140731B (en) | All-solid-state lithium battery and preparation method thereof | |
| CN107394114A (en) | Anode material of lithium battery and preparation method thereof and lithium battery anode, lithium battery | |
| CN107452950A (en) | The anode material for lithium-ion batteries and method of a kind of stable circulation | |
| CN112331843A (en) | Positive electrode material, positive electrode, preparation method of positive electrode and lithium secondary battery | |
| CN114583176A (en) | Multifunctional novel conductive agent and application thereof in pre-lithiation composite positive electrode | |
| CN113066988B (en) | Negative pole piece and preparation method and application thereof | |
| KR20140139675A (en) | Precursor of positive active material, positive active material, method for manufacturing the same and lithium secondary battery using the same | |
| CN115939361A (en) | Copper phosphide-doped hard carbon composite material and preparation method thereof | |
| CN114792804B (en) | 3D printing positive electrode ink, positive electrode forming method using same and application | |
| CN107492660A (en) | Anode sizing agent, positive plate and lithium ion battery | |
| CN114142080A (en) | Ultra-capacity graphene battery and preparation method thereof | |
| CN115207335A (en) | Low-temperature chargeable and dischargeable lithium ion battery cathode material and lithium ion battery | |
| CN112271324B (en) | High-voltage solid-state lithium battery and preparation method thereof | |
| CN114094047A (en) | Preparation method of modified sodium ion anode and modified sodium ion anode | |
| CN102956886A (en) | Lithium iron phosphate battery and preparation method thereof | |
| CN106848293A (en) | A kind of ternary cathode material of lithium ion battery and preparation method thereof | |
| CN109052471B (en) | Method for preparing lithium vanadate porous film by electrostatic spraying and application |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20240311 Address after: 523000 Room 401, building 2, No. 18, Gaoying Songzi Road, Dalang Town, Dongguan City, Guangdong Province Applicant after: Dongguan Maosheng New Energy Technology Co.,Ltd. Country or region after: China Address before: 518000 1308-1309, Pinus tabulaeformis business building, No. 48, Minqing Road, Fukang community, Longhua street, Longhua District, Shenzhen, Guangdong Applicant before: Shenzhen hanhailong Technology Co.,Ltd. Country or region before: China |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |