CN114005980A - Negative electrode material and lithium ion battery containing same - Google Patents
Negative electrode material and lithium ion battery containing same Download PDFInfo
- Publication number
- CN114005980A CN114005980A CN202111217600.XA CN202111217600A CN114005980A CN 114005980 A CN114005980 A CN 114005980A CN 202111217600 A CN202111217600 A CN 202111217600A CN 114005980 A CN114005980 A CN 114005980A
- Authority
- CN
- China
- Prior art keywords
- negative electrode
- electrode material
- lithium ion
- ion battery
- cathode material
- 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
Images
Classifications
-
- 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
- H01M4/60—Selection of substances as active materials, active masses, active liquids of organic compounds
- H01M4/602—Polymers
- H01M4/604—Polymers containing aliphatic main chain polymers
-
- 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
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- 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
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention discloses a negative electrode material and a lithium ion battery containing the same. The special stacking structure of the cathode material of the invention endows the cathode material with extremely high acid-base stability (pH0-14), and simultaneously, the abundant binding sites greatly enhance the capability of the material for inserting and extracting lithium ions. The cathode material has a porous structure, can quickly absorb a large amount of electrolyte to quickly transmit lithium ions; the anode material also has a plurality of oxidation-reduction sites, so that the material has higher theoretical specific capacity. The cathode material has a stable framework, a high specific surface area, abundant hydrogen bond action sites and a strong adsorption effect.
Description
Technical Field
The invention belongs to the technical field of lithium ion battery electrode materials and preparation thereof, relates to a negative electrode material and a lithium ion battery containing the negative electrode material, and particularly relates to a covalent organic framework negative electrode material, a preparation method thereof, a negative plate containing the negative electrode material and a lithium ion battery.
Background
The 21 st century energy crisis is attracting more and more attention, and the energy shortage and environmental pollution problem compel researchers to find other alternative energy sources, such as solar energy, wind energy, geothermal energy, biological energy and battery type storage devices, to become the focus of attention. The battery storage device has double roles of energy storage and release, and the development of a cheap, efficient and novel lithium ion battery cathode material has important significance for preparing the battery device with high energy density and stable cycle performance.
However, the market places higher demands on the storage density and the bendability of the lithium ion battery, and therefore, new electrode materials need to be developed to meet the demands. The traditional lithium ion battery negative electrode material is mainly used as a negative electrode active material and mainly comprises various carbon-based negative electrode active materials such as artificial graphite, natural graphite, hard carbon and the like. However, the above carbon-based negative electrode active material has only a low capacity of about 360 mAh/g. For silicon cathode materials which are researched more at present, when the silicon cathode materials are used, the expansion of silicon can cause that an SEI film breaks and fails, particles break and pulverize, and the volume change generated in the circulating process can cause great strain interface damage, and the silicon particles which are continuously pulverized and cracked can continuously consume electrolyte, so that the SEI film continuously grows and thickens at the interface of an electrode and the electrolyte, the expansion of a battery is caused, the stable output of the battery energy and the improvement of the circulating life are seriously influenced, and great potential safety hazard is brought to the battery. The organic negative electrode material can avoid the problems of reserves and cyclic expansion, has green sustainability and is an ideal negative electrode material for future lithium batteries. At present, the main electroactive organic negative electrode materials can be roughly classified into the following types: a conductive polymer, an organic sulfur compound, an organic radical compound, and an organic carbonyl compound. Among them, organic carbonyl compounds have been receiving great attention because of their high theoretical specific capacity. However, the organic carbonyl compound has problems of poor conductivity and poor cycle stability. Therefore, there is a need to develop a novel organic negative electrode material having a stable skeleton, a high specific surface area, abundant hydrogen bonding sites, and a strong adsorption effect. Meanwhile, the method can be prepared in situ and applied to solid batteries to become a technical problem to be solved urgently.
Disclosure of Invention
In order to improve the above technical problems, the present invention provides an organic negative electrode material, a method for preparing the same, and an application thereof, wherein the negative electrode material is composed of a single crystal of a three-dimensional framework material assembled by oligomers, and has a strong covalent bond and a highly reversible cooperative assembly between hydrogen bonds, thereby further promoting crystal growth. The special stacking structure of the cathode material of the invention endows the cathode material with extremely high acid-base stability (pH of 0-14), and simultaneously, the abundant binding sites greatly enhance the capability of the material for inserting and extracting lithium ions. The cathode material has a porous structure, can quickly absorb a large amount of electrolyte to quickly transmit lithium ions; the anode material also has a plurality of oxidation-reduction sites, so that the material has higher theoretical specific capacity. The cathode material has a stable framework, a high specific surface area, abundant hydrogen bond action sites and a strong adsorption effect.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a negative electrode material which is composed of single crystals of a three-dimensional organic framework material assembled by oligomers.
Wherein the oligomer is a kinetic product having a plurality of unreacted aldehyde groups.
Wherein the oligomer has a structure represented by formula I or formula II:
wherein the number average molecular weight of the oligomer is 50-4000.
Wherein the anode material has a porous structure.
Wherein the anode material has more than 1 redox site.
Wherein the anode material has more than 1 hydrogen bonding site.
Wherein the specific surface area of the negative electrode material is 800-2/g。
The invention also provides a negative plate which comprises the negative electrode material.
The negative plate comprises a current collector and an active material layer positioned on at least one side surface of the current collector, wherein the active material layer comprises the negative electrode material.
Wherein, the active material layer also comprises a conductive agent and a binder;
wherein the mass ratio of the negative electrode material to the conductive agent to the binder is (6-8): 1-13): 1.
The invention also provides a lithium ion battery, which comprises the negative electrode material; or, the negative electrode sheet is included.
The invention has the following beneficial effects:
the invention provides a negative electrode material composed of single crystals of a three-dimensional framework material assembled from oligomers, which has strong covalent bonds and highly reversible cooperative assembly between hydrogen bonds to promote crystal growth. The special stacking structure of the cathode material of the invention endows the cathode material with extremely high acid-base stability (pH of 0-14), and simultaneously, the abundant binding sites greatly enhance the capability of the material for inserting and extracting lithium ions. The cathode material has a porous structure, can quickly absorb a large amount of electrolyte to quickly transmit lithium ions; the anode material also has a plurality of oxidation-reduction sites, so that the material has higher theoretical specific capacity. The cathode material has a stable framework, a high specific surface area, abundant hydrogen bond action sites and a strong adsorption effect. The concrete expression is as follows:
(1) the cathode material has higher ion transmission capability;
(2) the cathode material has good structural stability and low cost, and is expected to become a new green lithium battery electrode material;
(3) the electrode prepared from the negative electrode material has the specific capacity of more than 1800mAh/g, and can be used for preparing a high-energy-density lithium battery;
(4) the lithium battery assembled by the negative electrode material has good cycle stability, and has 80% capacity retention rate after 600 cycles under the charging and discharging conditions of 1C/1C.
Drawings
Fig. 1 is a graph comparing XRD diffractograms of single crystals of COF-1 material prepared in example 1 and polycrystalline powder formed at the interface with calculation results derived from the single crystal structures thereof.
Fig. 2 is a graph showing cycle characteristics of lithium ion batteries manufactured in examples 1 to 2 of the present invention and comparative examples 1 to 2.
Detailed Description
As described above, the present invention provides a negative electrode material composed of a single crystal of a three-dimensional organic framework material assembled from oligomers.
In the present invention, the negative electrode material is composed of a single crystal of a three-dimensional frame material assembled from oligomers, and has a strong covalent bond and a highly reversible cooperative assembly between hydrogen bonds, thereby further promoting crystal growth.
According to the invention, the single crystal has an X-ray diffraction pattern substantially as shown in figure 1.
According to the present invention, the oligomer is a kinetic product having a plurality of unreacted aldehyde groups, and the unreacted aldehyde groups can also serve as hydrogen bond donors and acceptors and assemble the oligomer into a three-dimensional framework material. At the same time, the continuous formation of firm covalent bonds and highly reversible hydrogen bonds also enhances long-range symmetry and promotes the production of large single crystals.
According to the invention, the oligomer has a structure represented by formula I or formula II below:
according to the invention, the oligomer has a number average molecular weight of about 50 to 4000.
In the present invention, the negative electrode material has extremely high acid-base stability (extremely high stability in the range of pH0 to 14) due to its special stacking structure.
According to the present invention, the anode material has a porous structure. Due to the porous structure, the cathode material has extremely strong adsorption capacity, and can quickly absorb a large amount of electrolyte so as to quickly transmit lithium ions. For example, the absorption time of the electrolyte on the surface of the anode material may be less than 1 min.
In the invention, the cathode material has abundant binding sites, and the capability of the material for inserting and extracting lithium ions is greatly enhanced.
According to the invention, the anode material has more than 1 oxidation-reduction site, and the existence of a plurality of oxidation-reduction sites enables the material to have higher theoretical specific capacity.
According to the invention, the anode material has more than 1 hydrogen bonding site.
According to the invention, the specific surface area of the anode material is 800-850m2/g, for example 820-2G, exemplary 800m2/g、810m2/g、820m2/g、826m2/g、830m2/g、840m2/g、 850m2Or any of the foregoing ranges of values by two.
The invention also provides a preparation method of the anode material, which comprises the following steps: and carrying out in-situ reaction and self-assembly on the monomers for forming the oligomer to obtain the single crystal of the three-dimensional frame material assembled by the oligomer.
Specifically, the method comprises the following steps: reacting tetrakis (4-aminophenyl) methane with 6- (4-formylphenyl) pyridine-3-carbaldehyde (4,4' -biphenyldicarbaldehyde) or 4,4' -biphenyldicarbaldehyde (4,4' -biphenyldicarbaldehyde) to prepare the anode material.
According to the invention, the mass ratio of tetrakis (4-aminophenyl) methane to 6- (4-formylphenyl) pyridine-3-carbaldehyde (4,4' -biphenyldicarbaldehyde) or 4,4' -biphenyldicarbaldehyde (4,4' -biphenyldicarbaldehyde) is 1 (0.9-1), illustratively 1:0.9, 1:0.92, 1:0.94, 1:0.96, 1:0.98, 1: 1.
According to the present invention, the tetrakis (4-aminophenyl) methane and 6- (4-formylphenyl) pyridine-3-carbaldehyde or 4,4' -biphenyldicarboxaldehyde are added to the reaction system in the form of a solution. For example, a mixed solution of tetra (4-aminophenyl) methane, an acetic acid solution, and 6- (4-formylphenyl) pyridine-3-carbaldehyde or ethyl acetate/mesitylene of 4,4' -biphenyldicarbaldehyde is prepared, and the two solutions are mixed to obtain a mixed solution.
According to an exemplary embodiment of the present invention, in the mixed solvent of ethyl acetate/mesitylene, the mixing volume ratio of ethyl acetate to mesitylene is (2-4):1, exemplary 2:1, 3:1, 4: 1.
According to the invention, the reaction of tetrakis (4-aminophenyl) methane with 6- (4-formylphenyl) pyridine-3-carbaldehyde or 4,4' -biphenyldicarboxaldehyde is carried out in the presence of a PAN ultrafiltration membrane. Preferably, a mixed solution of acetic acid solution of tetrakis (4-aminophenyl) methane, 6- (4-formylphenyl) pyridine-3-carbaldehyde or ethyl acetate/mesitylene of 4,4' -biphenyldicarboxaldehyde is added to both sides of the reactor containing the PAN ultrafiltration membrane, respectively.
According to the invention, the reaction time is not less than 1 day, for example 2 days. Further, the temperature of the reaction is room temperature. According to the invention, the preparation method of the organic anode material further comprises washing the reaction product to remove residual monomers, thereby preparing the organic anode material. For example, the washing solvent is ethyl acetate.
According to the invention, the preparation method of the anode material specifically comprises the following steps:
s1: vertically placing the PAN ultrafiltration membrane in the middle of the diffusion cell;
s2: dissolving tetra (4-aminophenyl) methane in acetic acid, dissolving 6- (4-formylphenyl) pyridine-3-formaldehyde (6- (4-formylphenyl) nicotinaldehyde) or 4,4' -biphenyldicarboxaldehyde in a mixed solvent of ethyl acetate/mesitylene, and respectively placing the mixed solvent on two sides of a diffusion pool;
s3: the reaction mixture was kept at room temperature for 2 days;
s4: the resulting crystals were washed with an ethyl acetate mixture to remove residual monomer and the product was collected.
The invention also provides application of the negative electrode material as a negative electrode active material of a lithium ion battery.
The invention also provides a negative plate which comprises the negative electrode material.
According to the present invention, the anode material serves as an anode active material.
According to the invention, the negative plate comprises a current collector and an active material layer positioned on at least one side surface of the current collector, wherein the active material layer comprises the negative electrode material.
According to the present invention, the active material layer further includes a conductive agent and a binder. Preferably, the mass ratio of the negative electrode material to the conductive agent to the binder is (6-8): 1-13): 1, and is exemplarily 6:1:1, 7:13:1, 8:7:1, 8:1:1, 8:13: 1.
According to an exemplary embodiment of the present invention, the conductive agent may be conductive carbon black.
According to an exemplary embodiment of the invention, the binder may be PVDF.
The invention also provides a preparation method of the negative plate, which comprises the steps of uniformly dispersing the negative material, the conductive agent and the adhesive in a solvent, coating the solution on a current collector, and then drying the solution in vacuum to prepare a negative electrode film.
The invention also provides a lithium ion battery which comprises the negative electrode material and/or the negative electrode sheet.
According to the invention, the lithium ion battery further comprises a positive plate. For example, the positive electrode active material used for the positive electrode sheet may be lithium cobaltate (LiNi)0.8Co0.1Mn0.1O2)。
According to the present invention, the lithium ion battery further comprises a separator.
According to the invention, the lithium ion battery further comprises an electrolyte. For example, the electrolyte may be LiPF6Commercial electrolyte for the system.
The invention also provides a preparation method of the lithium ion battery, which comprises the following steps: the method comprises the steps of separating the negative plate and the positive plate by a diaphragm, injecting electrolyte, and assembling to obtain the lithium ion battery.
For a further understanding of the invention, reference will now be made to the preferred embodiments of the invention in conjunction with the following examples, but it will be understood that the description is intended to illustrate the features and advantages of the invention further, and not to limit the invention.
The invention is further illustrated by the following specific examples.
The test method comprises the following steps:
and (3) testing the cycle number of the battery: after the battery is assembled, a LAND blue battery test system is used for carrying out cycle performance test under the conditions of 0.2C/0.2C charge-discharge current and 3.0V-4.4V charge-discharge voltage.
Example 1
Preparing a negative electrode material:
s1: vertically placing a PAN ultrafiltration membrane with the molecular weight of 40000 in the middle of a diffusion cell;
s2: dissolving 35mg of tetrakis (4-aminophenyl) methane in 7ml of acetic acid, and dissolving 32.9mg of 6- (4-formylphenyl) pyridine-3-carbaldehyde (6- (4-formamylphenyl) nicotinaldehyde) in 7ml of a mixed solvent of ethyl acetate/mesitylene (V/V ═ 3/1), and placing the mixture on both sides of a diffusion cell;
s3: the reaction mixture was kept at room temperature for 2 days;
s4: the crystals were washed with ethyl acetate to remove residual monomers and the product COF-1 was collected and its formula was as follows:
fig. 1 is a graph comparing an XRD diffractogram of a single crystal (single crystal) of the COF-1 material prepared in this example and a polycrystalline powder (polycrystalline powder) formed at an interface with a calculation result derived from its single crystal structure. As can be seen from the figure: the COF-1 material prepared by the invention has a single crystal structure and is a bulk sample. Further comparing the COF-1 material prepared in this example with the results obtained by calculation using the single crystal structure, the close correspondence between the peak positions of the characteristic diffraction peaks of the two was found, thus confirming that the COF-1 material phase prepared by the present invention has higher purity.
Preparing a negative pole piece: uniformly dispersing the negative electrode material (450mg), conductive carbon black (50mg) and PVDF binder (50mg) in a solvent, and coating the solution on a Cu foil current collector with the thickness of 6 mu m, wherein the coating amount is 4mg/cm2And then vacuum-dried to prepare a negative electrode film.
Preparing a positive pole piece: using conductive carbon black as a conductive agent, PVDF as a binder and NMP as a solvent, stirring uniformly, and adding a positive active material LiNi0.8Co0.1Mn0.1O2. In the mixture, the solid component contained 90 wt.% lithium cobaltate, 5 wt.% binder PVDF and 5 wt.% conductive carbon black. The current collector is 10 μm Al foil, and the coating amount is 21mg/cm2。
Preparing a lithium ion battery: the positive electrode plate, the negative electrode film and the 1M LiPF6And (EC + DEC, 1:1) commercial electrolyte and a polyolefin microporous membrane are assembled into a soft package lithium ion battery through winding, and the sealing of a common tab and an aluminum plastic membrane is assisted.
Example 2
S1: vertically placing a PAN ultrafiltration membrane with the molecular weight of 40000 in the middle of a diffusion cell;
s2: 35mg of tetrakis (4-aminophenyl) methane was dissolved in 7ml of acetic acid, and 32.9mg of 4,4' -biphenyldicarbaldehyde was dissolved in 7ml of a mixture of ethyl acetate/mesitylene (V/V ═ 3/1), which was placed on both sides of a diffusion cell, respectively;
s3: the reaction mixture was kept at room temperature for 2 days;
s4: the resulting crystals were washed with an ethyl acetate mixture to remove residual monomers and collect the product COF-2, which has the formula:
preparing a positive pole piece: using conductive carbon black as a conductive agent, PVDF as a binder and NMP as a solvent, stirring uniformly, and adding a positive active material LiNi0.8Co0.1Mn0.1O2. In the mixture, the solid component contained 90 wt.% lithium cobaltate, 5 wt.% binder PVDF and 5 wt.% conductive carbon black. The current collector is 10 μm Al foil, and the coating amount is 21mg/cm2。
Preparing a negative pole piece and a battery:
uniformly dispersing the organic negative electrode material (450mg), conductive carbon black (50mg) and PVDF binder (50mg) in a solvent, and coating the solution on a Cu foil current collector with the thickness of 6 mu m, wherein the coating amount is 4mg/cm2Then vacuum drying to prepare a negative electrode film; the negative electrode film and the positive electrode sheet were subjected to 1M LiPF6And (EC + DEC, 1:1) a commercial electrolyte and a polyolefin microporous membrane, and assembling to obtain the lithium ion battery.
Comparative example 1
Uniformly dispersing a graphite negative electrode material (450mg), conductive carbon black (50mg) and a PVDF binder (50mg) in a solvent, coating the solvent on a 6 mu mCu foil current collector, and then drying the current collector in vacuum to prepare a negative electrode film; the negative electrode film and the positive electrode sheet (same as in example 1) were subjected to 1M LiPF6And (EC + DEC, 1:1) a commercial electrolyte and a polyolefin microporous membrane, and assembling to obtain the lithium ion battery.
Comparative example 2
Uniformly dispersing a silicon negative electrode material (450mg), conductive carbon black (50mg) and a PVDF binder (50mg) in a solvent, coating the solution on a Cu foil current collector with the thickness of 6 mu m, and then drying the solution in vacuum to prepare a negative electrode film; the negative electrode film and the positive electrode sheet (same as in example 1) were subjected to 1M LiPF6And (EC + DEC, 1:1) a commercial electrolyte and a polyolefin microporous membrane, and assembling to obtain the lithium ion battery.
Fig. 2 is a graph showing cycle characteristics of lithium ion batteries manufactured in examples 1 to 2 of the present invention and comparative examples 1 to 2. As can be seen from fig. 2, under the same conditions, compared with the conventional silicon negative electrode material and graphite negative electrode material, the negative electrode material prepared by the invention has a higher cycle performance and a longer cycle life because of its extremely high acid-base stability (pH0-14) and abundant binding sites, which greatly enhances the ability of the negative electrode material to intercalate and deintercalate lithium ions.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. A negative electrode material is characterized in that the negative electrode material is composed of a single crystal of a three-dimensional organic framework material assembled by oligomers.
2. The negative electrode material of claim 1, wherein the oligomer is a kinetic product having a plurality of unreacted aldehyde groups.
3. The negative electrode material of claim 1 or 2, wherein the oligomer has a structure represented by formula I or formula ii:
4. the negative electrode material of any of claims 1 to 3, wherein the oligomer has a number average molecular weight of 50 to 4000.
5. The negative electrode material of any one of claims 1 to 4, wherein the negative electrode material has a porous structure.
6. The negative electrode material of any of claims 1-5, wherein the negative electrode material has more than 1 redox site;
and/or the anode material has more than 1 hydrogen bonding site;
and/or the specific surface area of the anode material is 800-850m2/g。
7. A negative electrode sheet comprising the negative electrode material according to any one of claims 1 to 6.
8. The negative electrode sheet according to claim 7, wherein the negative electrode sheet comprises a current collector and an active material layer on at least one surface of the current collector, the active material layer comprising the negative electrode material.
9. The negative electrode sheet according to claim 8, wherein the active material layer further comprises a conductive agent and a binder;
and/or the mass ratio of the negative electrode material, the conductive agent and the binder is (6-8): 1-13): 1.
10. A lithium ion battery, characterized in that it comprises the negative electrode material according to any one of claims 1 to 6; alternatively, the negative electrode sheet according to any one of claims 7 to 9 is included.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111217600.XA CN114005980B (en) | 2021-10-19 | 2021-10-19 | Negative electrode material and lithium ion battery containing same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111217600.XA CN114005980B (en) | 2021-10-19 | 2021-10-19 | Negative electrode material and lithium ion battery containing same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114005980A true CN114005980A (en) | 2022-02-01 |
| CN114005980B CN114005980B (en) | 2022-11-22 |
Family
ID=79923208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111217600.XA Active CN114005980B (en) | 2021-10-19 | 2021-10-19 | Negative electrode material and lithium ion battery containing same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114005980B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1669162A (en) * | 2002-02-18 | 2005-09-14 | 日本电气株式会社 | Electrode-active material and electrodes made by using the same, and cells equipped with the electrodes |
| US20170222231A1 (en) * | 2014-09-01 | 2017-08-03 | The University Of Tokyo | Conductive hybrid material including covalent organic structure |
| US20180051137A1 (en) * | 2015-12-17 | 2018-02-22 | Lg Chem, Ltd. | Lithium secondary battery anode and lithium secondary battery including same |
| KR20180071105A (en) * | 2016-12-19 | 2018-06-27 | 울산과학기술원 | Porous and conductive membrane for lithium-sulfur battery, method for manufacturing the same, and lithium-sulfur battery comprising the same |
| US20190284212A1 (en) * | 2016-07-12 | 2019-09-19 | University Of Central Florida Research Foundation, Inc. | Mechanically shaped 2-dimensional covalent organic frameworks |
| CN110483799A (en) * | 2019-08-30 | 2019-11-22 | 兰州交通大学 | A kind of controllable method for preparing and its stored energy application based on covalent organic frame |
| CN111682207A (en) * | 2020-05-15 | 2020-09-18 | 上海大学 | Heteroatom-containing covalent organic framework electrode material, and preparation method and application thereof |
| CN112447989A (en) * | 2020-11-18 | 2021-03-05 | 上海簇睿低碳能源技术有限公司 | 3D covalent organic framework material, preparation method and application |
| CN112736224A (en) * | 2019-10-29 | 2021-04-30 | 北京新能源汽车股份有限公司 | Solid-state lithium battery |
-
2021
- 2021-10-19 CN CN202111217600.XA patent/CN114005980B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1669162A (en) * | 2002-02-18 | 2005-09-14 | 日本电气株式会社 | Electrode-active material and electrodes made by using the same, and cells equipped with the electrodes |
| US20170222231A1 (en) * | 2014-09-01 | 2017-08-03 | The University Of Tokyo | Conductive hybrid material including covalent organic structure |
| US20180051137A1 (en) * | 2015-12-17 | 2018-02-22 | Lg Chem, Ltd. | Lithium secondary battery anode and lithium secondary battery including same |
| US20190284212A1 (en) * | 2016-07-12 | 2019-09-19 | University Of Central Florida Research Foundation, Inc. | Mechanically shaped 2-dimensional covalent organic frameworks |
| KR20180071105A (en) * | 2016-12-19 | 2018-06-27 | 울산과학기술원 | Porous and conductive membrane for lithium-sulfur battery, method for manufacturing the same, and lithium-sulfur battery comprising the same |
| CN110483799A (en) * | 2019-08-30 | 2019-11-22 | 兰州交通大学 | A kind of controllable method for preparing and its stored energy application based on covalent organic frame |
| CN112736224A (en) * | 2019-10-29 | 2021-04-30 | 北京新能源汽车股份有限公司 | Solid-state lithium battery |
| CN111682207A (en) * | 2020-05-15 | 2020-09-18 | 上海大学 | Heteroatom-containing covalent organic framework electrode material, and preparation method and application thereof |
| CN112447989A (en) * | 2020-11-18 | 2021-03-05 | 上海簇睿低碳能源技术有限公司 | 3D covalent organic framework material, preparation method and application |
Non-Patent Citations (3)
| Title |
|---|
| BO GUI，ET AL.: "Three-Dimensional Covalent Organic Frameworks: From Topology Design to Applications", 《ACCOUNTS OF CHEMICAL RESEARCH》 * |
| LINYI BAI，ET AL.: "Two Fully Conjugated Covalent Organic Frameworks as Anode Materials for Lithium Ion Batteries", 《JOURNAL OF MATERIALS CHEMISTRY A》 * |
| ZHEN LI，ET AL.: "Three-dimensional Covalent Organic Frameworks as Host Materials for Lithium-Sulfur Batteries", 《CHINESE JOURNAL OF POLYMER SCIENCE》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114005980B (en) | 2022-11-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110474044B (en) | High-performance water-based zinc ion battery positive electrode material and preparation method and application thereof | |
| CN103594693B (en) | A kind of titanium dioxide/niobium-titanium oxide composite material and Synthesis and applications thereof | |
| CN111916640B (en) | WS2/CNTs modified diaphragm of lithium-sulfur battery and preparation method thereof | |
| CN102332558A (en) | Lithium ion battery and anode pole piece thereof | |
| CN107634226B (en) | Synthesis and application of lithium ion battery cathode material taking coordination polymer as template | |
| CN111211273A (en) | Lithium-sulfur battery with iron nitride nanoparticles growing in situ on reduced graphene oxide as modified diaphragm material and preparation method thereof | |
| CN103915649A (en) | High-energy-density lithium ion battery and preparation method thereof | |
| US10727480B2 (en) | Sulfur composite cathode material and preparation method and application thereof | |
| CN102351163A (en) | Nano carbon microsphere cathode material of lithium ion cell and its preparation method | |
| CN105761944B (en) | A kind of hybrid super capacitor anode composite piece and preparation method thereof, hybrid super capacitor | |
| CN102332567A (en) | Graphene/chromium nitride nano-composite material and preparation method thereof | |
| CN114220944A (en) | Positive pole piece modified by polymer film and preparation method thereof | |
| CN114678505B (en) | Sulfur-phosphorus co-doped hard carbon composite material and preparation method thereof | |
| CN111435732B (en) | Negative electrode material of lithium ion battery, preparation method of negative electrode material and lithium ion battery | |
| WO2023245949A1 (en) | Metal-organic coordination polymer m2cax, preparation method therefor and use thereof | |
| CN113224464A (en) | Lithium-sulfur battery taking CoS/NS co-doped graphene composite material coated diaphragm as intermediate layer | |
| CN102723488B (en) | Vanadium-doped lithium iron silicate anode material and preparation method thereof | |
| CN114203976A (en) | Mixed solution capable of improving stability of metal lithium cathode, preparation method and application | |
| CN102820466B (en) | A kind of lithium ion battery cathode material and its preparation method based on hydroxy cobalt oxide | |
| CN109950454B (en) | Functional diaphragm of lithium-sulfur battery and preparation method thereof | |
| CN109627441B (en) | Tubular covalent organic framework polyimide, preparation method thereof and battery application | |
| CN114005980B (en) | Negative electrode material and lithium ion battery containing same | |
| CN116344828A (en) | Cathode-free lithium metal battery based on sulfonic acid group modified covalent organic framework material | |
| CN101916875A (en) | High-specific-energy nanooxide energy storage battery | |
| CN114220975A (en) | Lithium-rich manganese-based positive pole piece and preparation method and application thereof |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |