CN111211299A - Modified lithium ion battery positive electrode material coated with strong electronegative organic matter layer and preparation method thereof - Google Patents
Modified lithium ion battery positive electrode material coated with strong electronegative organic matter layer and preparation method thereof Download PDFInfo
- Publication number
- CN111211299A CN111211299A CN202010015604.9A CN202010015604A CN111211299A CN 111211299 A CN111211299 A CN 111211299A CN 202010015604 A CN202010015604 A CN 202010015604A CN 111211299 A CN111211299 A CN 111211299A
- Authority
- CN
- China
- Prior art keywords
- lithium ion
- ion battery
- organic
- positive electrode
- anode 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
- H01M4/362—Composites
- H01M4/366—Composites as layered products
-
- 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
- H01M4/36—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
- H01M4/505—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
-
- 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
- H01M4/525—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
-
- 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
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
-
- 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
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/624—Electric conductive fillers
-
- 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
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/628—Inhibitors, e.g. gassing inhibitors, corrosion inhibitors
-
- 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 relates to a modified lithium ion battery anode material coated with a strong electronegative organic layer and a preparation method thereof; belongs to the technical field of high-performance battery development. The lithium ion battery anode material is coated with an organic chelating material; and the ligand on the organic chelating material is contacted with the surface of the anode material; the organic chelating material is polymerized by at least one of acetoacetic acid ethylene glycol methacrylate, acrylic acid-2-cyanoethyl ester, 4-vinylpyridine, N-vinylformamide, cyanoethyl methacrylate and N-isopropyl acrylamide. The preparation method comprises the following steps: the monomer of the organic chelating material and the lithium ion battery anode material powder which are distributed and taken according to the design group are placed in liquid to be uniformly mixed, and then the modified lithium ion battery anode material coated with the strong electronegative organic layer is obtained after polymerization reaction and/or condensation reaction and drying treatment. The battery material has reasonable component design, simple and controllable preparation process, and excellent performance of the obtained product, and is convenient for large-scale industrial application.
Description
Technical Field
The invention relates to a modified lithium ion battery anode material coated with a strong electronegative organic layer and a preparation method thereof; belongs to the technical field of high-performance battery development.
Background
The lithium ion battery has the advantages of high energy density, high working voltage, long cycle life, environmental friendliness and the like, and becomes an energy storage medium with the greatest prospect and the greatest potential. Currently, the development of novel high-voltage positive electrode materials, such as lithium nickel manganese oxide, lithium cobalt oxide, lithium manganese oxide, lithium-rich manganese-based positive electrode materials, is an effective means for improving the energy density and power density of lithium ion batteries. However, under high voltage, serious side reactions occur between the electrolyte and the surface of the positive electrode material, the dissolution rate of transition metal ions in the positive electrode material is increased, and the irreversible loss of the transition metal ions causes the instability of the positive electrode active material structure, thereby affecting the electrochemical performance of the high voltage positive electrode material. And the dissolved transition metal ions are deposited on the surface of the negative electrode through the electrolyte, so that the oxidative decomposition of lithium salt and solvent molecules and the consumption of lithium are catalyzed, and the solid electrolyte interface on the negative electrode side is damaged, so that the impedance of the battery is increased, and irreversible capacity attenuation is caused.
At present, in order to solve the problem of the dissolution of transition metal ions, a surface coating method is generally adopted to improve the electrochemical performance of the cathode material, such as carbon materials and inorganic materials. However, under high temperature and high voltage, the carbon material or inorganic material coating layer falls off due to the excessive volume expansion and contraction change of the active material lattice, the dissolution of the positive active material in the electrolyte is still serious, the coating layer with single function can not simultaneously realize the dissolution and deposition of transition metal ions and the protection of the structure transformation of the positive active material, and the battery cycle performance is not greatly improved.
Therefore, in view of the above, it is necessary to provide a multifunctional surface coating material for a high voltage positive electrode material by modifying the surface of the positive electrode material.
Disclosure of Invention
The invention aims to provide a high-voltage positive electrode material of a lithium ion battery, which comprises the high-voltage positive electrode material and an organic chelate layer coated on the surface of the positive electrode material. The invention is realized by the following scheme.
The invention relates to a modified lithium ion battery anode material coated with a strong electronegative organic substance layer; the lithium ion battery anode material is coated with an organic chelating material; and the ligand on the organic chelating material is contacted with the surface of the anode material; the organic chelating material is polymerized by at least one of acetoacetic acid glycol methacrylate, acrylic acid-2-cyanoethyl ester, 4-vinylpyridine, acrylonitrile, N-vinylformamide, hydroxyethyl methacrylate and N-isopropyl acrylamide.
The invention relates to a modified lithium ion battery anode material coated with a strong electronegative organic substance layer; the coating mass fraction of the organic chelating material is 1-50 wt%. Among them, the coating mass fraction of the organic chelate material is preferably 1 to 10 wt%, more preferably 1 to 5 wt%, and still more preferably 1 to 3 wt%. The method for calculating the coating mass fraction comprises the following steps: mass of organic chelating material monomer/mass of lithium ion battery positive electrode material 100%.
The invention relates to a modified lithium ion battery anode material coated with a strong electronegative organic substance layer; when the anode material of the lithium ion battery is LiNi0.6Co0.2Mn0.2O2When the current is over; the monomer of the organic chelating material used is preferably acetoacetic acid ethylene glycol methacrylate.
The invention relates to a preparation method of a modified lithium ion battery anode material coated with a strong electronegative organic substance layer; the monomer of the organic chelating material and the lithium ion battery anode material powder which are distributed and taken according to the design group are placed in liquid to be uniformly mixed, and then the modified lithium ion battery anode material coated with the strong electronegative organic layer is obtained after polymerization reaction and/or condensation reaction and drying treatment.
The invention relates to a preparation method of a modified lithium ion battery anode material coated with a strong electronegative organic substance layer; the monomer of the organic chelating material and the lithium ion battery anode material powder which are distributed and taken according to the design group are placed in anhydrous liquid to be uniformly mixed, then an initiator is added, polymerization reaction and/or condensation reaction are carried out under the stirring condition, then, the liquid is removed, and the modified lithium ion battery anode material coated with the strong electronegative organic layer is obtained after drying treatment.
The invention relates to a preparation method of a modified lithium ion battery anode material coated with a strong electronegative organic substance layer; the anhydrous liquid is at least one of anhydrous acetonitrile, tetrahydrofuran, dimethylformamide, dimethyl sulfoxide, acetone and toluene.
The invention relates to a preparation method of a modified lithium ion battery anode material coated with a strong electronegative organic substance layer; when the monomer of the organic chelating material is acetoacetic acid ethylene glycol methacrylate and/or 2-cyanoethyl acrylate, the initiator is at least one selected from azodiisobutyronitrile, cyclohexanone peroxide, azodiisoheptonitrile, tert-butyl hydroperoxide and dimethyl azodiisobutyrate.
The invention relates to a preparation method of a modified lithium ion battery anode material coated with a strong electronegative organic substance layer; the temperature is controlled to be 45-85 ℃ during the polymerization reaction and/or the condensation reaction.
In the invention, when the lithium ion battery anode material is LiNi0.6Co0.2Mn0.2O2When the monomer of the organic chelating material is preferably acetoacetic acid ethylene glycol methacrylate, the capacity retention rate of the obtained product is 87-88% after the product is subjected to charge-discharge cycle for 200 times under 1C.
The invention utilizes the polymer group on the surface of the material, realizes double functions of dissolving out and shuttling transition metal ions by adjusting the electronegative environment of the surface of the material and the action of complex metal ions, and is essentially different from the prior patent.
The method has the advantages that a layer of organic chelating material is coated on the surface of a high-voltage positive electrode material of the lithium ion battery, and the coating layer of the organic chelating material has the following three effects that 1) organic monomer materials are adopted to carry out in-situ polymerization on the surface of the positive electrode material, and the coating layer is favorable for improving the ionic conductivity of the material and the stability of an organic coating layer compared with the condition that the coating layer is directly coated by high polymer organic materials, 2) groups (such as carbonyl, cyano-group, pyridine, β -diketone, β -ketoester, amide group and the like) on organic matters and transition metal ions on the surface of the positive electrode material form metal organic ligands by utilizing the ion-dipole interaction, so that a strong electronegative environment is formed on the surface of the positive electrode material, the surface transition metal ions are converted to a high valence state in the lithium removal process under the charge balance effect, the oxygen loss reaction on the surface of the material is reduced, the stability of the positive electrode material is improved, 3) the side reaction of contact between the positive electrode material and electrolyte under high temperature and high voltage is effectively inhibited, the dissolution of the transition metal ions is effectively inhibited, 4) the functional groups with the chelating function on the fixation of the dissolved transition metal ions, and the inhibition of the double dissolution of the lithium ion deposition of the.
Drawings
FIG. 1 is LiNi in example 10.6Co0.2Mn0.2O2Scanning Electron Microscope (SEM) images before coating;
FIG. 2 shows LiNi in example 10.6Co0.2Mn0.2O2A post-coating Scanning Electron Microscope (SEM) image;
FIG. 3 is LiNi in comparative example 10.6Co0.2Mn0.2O2A post-coating Scanning Electron Microscope (SEM) image;
FIG. 4 is an electrical property characterization chart of the products obtained in example 1 and comparative example 1;
FIG. 5 is an electrical property characterization chart of the product obtained in example 2;
FIG. 6 is an electrical property characterization chart of the product obtained in example 3.
Detailed Description
Example 1
Accurately weighing 0.1g of acetoacetic acid-methacrylic acid glycol ester and LiNi0.6Co0.2Mn0.2O2Dissolving 5g of the organic coating in 25ml of anhydrous acetonitrile, stirring the mixture for 1h at 60 ℃ under the protection of argon, adding 0.001g of azodiisobutyronitrile initiator into the mixed solution, continuously stirring the mixture for 4h at 60 ℃, collecting the organic coating powder by using a rotary evaporator, and drying the organic coating powder for 12h in vacuum to obtain a sample with the coating amount of 2 wt%.
0.16g of the obtained sample and the starting material were weighed and mixed with 0.02g of conductive carbon, respectivelyBlack and 0.02g PVDF were mixed in a planetary mixer for 6min, and 500. mu.L NMP was added to prepare a slurry of a certain viscosity. Coating the prepared slurry on aluminum foil, drying at 80 ℃ in a vacuum oven, and making into electrode slice with diameter of 12mm by a puncher, using LiTFSI/LiBOB/LiPF6The mol ratio is 6: a2016 coin cell is assembled by an electrolyte solution with a solvent of EC/EMC (EC/EMC, and the mass ratio of EC to EMC is 4: 6), the charge-discharge voltage range is 3-4.3V, and the charge-discharge cycle under 1C is measured.
Through detection, a scanning electron microscope image before the coating of the layered ternary cathode material of the embodiment is shown in fig. 1, and a scanning electron microscope image after the coating is shown in fig. 2, and it can be seen from a test result that the method can realize the uniform coating of the organic material on the cathode material. Fig. 4 shows a cycle curve diagram of a lithium ion battery made of the coated layered ternary material of the embodiment, in which the capacity retention rate of 200 cycles of the original material is 65.4%, and the capacity retention rate of 200 cycles of the coated material is 87.6%.
Comparative example 1
The other condition parameters were identical to the coating cases in example 1, except that:
accurately weighing 0.1g of acetoacetic acid-methacrylic acid glycol ester and LiNi0.6Co0.2Mn0.2O25g of the total weight of the mixture; firstly, dissolving acetoacetic acid ethylene glycol methacrylate in 25ml of anhydrous acetonitrile, then adding 0.001g of azodiisobutyronitrile initiator, and stirring for 1 hour; adding the prepared LiNi0.6Co0.2Mn0.2O2(ii) a After stirring at 60 ℃ for 4 hours, the organically coated powder was collected using a rotary evaporator and dried in vacuo for 12 hours.
Through detection, a scanning electron microscope image of the layered ternary cathode material of the comparative example after organic coating is shown in fig. 3, and compared with example 1, the organic coating obtained by the comparative example is poor in uniformity. The cycle curve of the lithium ion battery made of the coated layered ternary material is shown in fig. 4, and the capacity retention rate of the obtained product at 200 circles is 75%.
Example 2
Accurately weighing 0.15g of acrylic acid-2-cyanoethyl ester and LiNi0.6Co0.2Mn0.2O25g and 0.001g of azobisisobutyronitrile are dissolved in 25ml of anhydrous acetonitrile, stirred for 1h at 60 ℃ under the protection of argon, 0.001g of azobisisobutyronitrile initiator is added into the mixed solution, stirred for 4h at 60 ℃, then the organic coated powder is collected by a rotary evaporator, and dried for 12h in vacuum, thus obtaining a sample with the coating amount of 3 wt%.
0.16g of the obtained sample and the original material are weighed, 0.02g of conductive carbon black and 0.02g of PVDF are respectively added, mixed for 6min in a planetary mixer, and then 500 mu L NMP is added to prepare slurry with certain viscosity. Coating the prepared slurry on an aluminum foil, drying the aluminum foil in a vacuum oven at 80 ℃, then preparing an electrode slice with the diameter of 12mm by using a puncher, and preparing 1mol/L LiPF6(the solvent is EC/EMC, the mass ratio is 3: 7) the electrolyte is used as the electrolyte to assemble 2016 type button cells, the charging and discharging voltage ranges from 3V to 4.3V, and the charging and discharging cycle under 1C is measured.
Through detection, a cycle curve diagram of the lithium ion battery made of the organically-coated layered ternary material of the embodiment is shown in fig. 5, the capacity retention rate of the original material at 150 turns is 70.1%, the average coulombic efficiency is 96.13%, the capacity retention rate of the coated material at 150 turns is 82.1%, and the average coulombic efficiency is 99.56%.
Embodiment 3
Accurately weighing 0.15g of acrylonitrile and LiNi0.6Co0.2Mn0.2O2Dissolving 5g of the organic coating in 25ml of tetrahydrofuran, stirring for 1h at 60 ℃ under the protection of argon, adding 0.001g of azobisisobutyronitrile initiator into the mixed solution, continuing stirring for 4h at 60 ℃, collecting the organic coating powder by using a rotary evaporator, and drying for 12h in vacuum to obtain a sample with the coating amount of 3 wt%.
0.16g of the obtained sample and the original material are weighed, 0.02g of conductive carbon black and 0.02g of PVDF are respectively added, mixed for 6min in a planetary mixer, and then 500 mu L NMP is added to prepare slurry with certain viscosity. Coating the prepared slurry on an aluminum foil, drying the aluminum foil in a vacuum oven at 80 ℃, then preparing an electrode slice with the diameter of 12mm by using a puncher, and preparing 1mol/L LiPF6(the solvent is EC/EMC, the mass ratio is 3: 7) as electrolyteThe battery is packed into 2016 type button cell, the charging and discharging voltage ranges from 3V to 4.3V, and the charging and discharging cycle under 1C is measured.
Through detection, a cycle curve diagram of the lithium ion battery made of the organically-coated layered ternary material of the embodiment is shown in fig. 6, the capacity retention rate of the original material at 150 turns is 70.1%, the average coulombic efficiency is 96.13%, the capacity retention rate of the coated material at 150 turns is 82.3%, and the average coulombic efficiency is 98.36%.
Claims (9)
1. A modified lithium ion battery anode material coated with a strong electronegative organic substance layer; the method is characterized in that: the lithium ion battery anode material is coated with an organic chelating material; and the ligand on the organic chelating material is contacted with the surface of the anode material; the organic chelating material is polymerized by at least one of acetoacetic acid ethylene glycol methacrylate, acrylic acid-2-cyanoethyl ester, 4-vinylpyridine, N-vinylformamide, hydroxyethyl methacrylate and N-isopropyl acrylamide.
2. The positive electrode material of the lithium ion battery modified by the coating strong electronegative organic substance layer according to claim 1; the method is characterized in that: the coating mass fraction of the organic chelating material is 1-50 wt%. Among them, the coating mass fraction of the organic chelate material is preferably 1 to 10 wt%, more preferably 1 to 5 wt%, and still more preferably 1 to 3 wt%.
3. The positive electrode material of the lithium ion battery modified by the coating strong electronegative organic substance layer according to claim 1; the method is characterized in that: when the anode material of the lithium ion battery is LiNi0.6Co0.2Mn0.2O2When the current is over; the monomer of the organic chelating material used is preferably acetoacetic acid ethylene glycol methacrylate.
4. A method for preparing the positive electrode material of the lithium ion battery modified by coating the strong electronegative organic substance layer according to any one of claims 1 to 3; the method is characterized in that: the monomer of the organic chelating material and the lithium ion battery anode material powder which are distributed and taken according to the design group are placed in liquid to be uniformly mixed, and then the modified lithium ion battery anode material coated with the strong electronegative organic layer is obtained after polymerization reaction and/or condensation reaction and drying treatment.
5. The preparation method of the positive electrode material of the lithium ion battery modified by the strong electronegative organic layer according to claim 4; the method is characterized in that: the monomer of the organic chelating material and the lithium ion battery anode material powder which are distributed and taken according to the design group are placed in anhydrous liquid to be uniformly mixed, then an initiator is added, polymerization reaction and/or condensation reaction are carried out under the stirring condition, then, the liquid is removed, and the modified lithium ion battery anode material coated with the strong electronegative organic layer is obtained after drying treatment.
6. The preparation method of the positive electrode material of the lithium ion battery modified by the strong electronegative organic layer coating according to claim 5; the method is characterized in that: the anhydrous liquid is at least one of anhydrous acetonitrile, tetrahydrofuran, dimethylformamide, dimethyl sulfoxide, acetone and toluene.
7. The preparation method of the positive electrode material of the lithium ion battery modified by the strong electronegative organic layer according to claim 4; the method is characterized in that: when the monomer of the organic chelating material is acetoacetic acid ethylene glycol methacrylate and/or 2-cyanoethyl acrylate, the initiator is at least one selected from azodiisobutyronitrile, cyclohexanone peroxide, azodiisoheptonitrile, tert-butyl hydroperoxide and dimethyl azodiisobutyrate.
8. The preparation method of the positive electrode material of the lithium ion battery modified by the strong electronegative organic layer according to claim 4; the method is characterized in that: the polymerization and/or condensation reaction is carried out at a temperature of 45 to 85 ℃ and preferably 55 to 65 ℃.
9. Preparation of positive electrode material for lithium ion battery modified by coating strong electronegative organic substance layer according to claim 7A method; the method is characterized in that: when the anode material of the lithium ion battery is LiNi0.6Co0.2Mn0.2O2When the monomer of the organic chelating material is preferably acetoacetic acid ethylene glycol methacrylate, the capacity retention rate of the obtained product is 87-88% after the product is subjected to charge-discharge cycle for 200 times under 1C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010015604.9A CN111211299B (en) | 2020-01-07 | 2020-01-07 | Modified lithium ion battery positive electrode material coated with strong electronegative organic matter layer and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010015604.9A CN111211299B (en) | 2020-01-07 | 2020-01-07 | Modified lithium ion battery positive electrode material coated with strong electronegative organic matter layer and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111211299A true CN111211299A (en) | 2020-05-29 |
| CN111211299B CN111211299B (en) | 2022-06-24 |
Family
ID=70786022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010015604.9A Active CN111211299B (en) | 2020-01-07 | 2020-01-07 | Modified lithium ion battery positive electrode material coated with strong electronegative organic matter layer and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111211299B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113451568A (en) * | 2021-06-28 | 2021-09-28 | 五邑大学 | Preparation method of ester organic matter in-situ coated high-nickel cathode material |
| CN114784283A (en) * | 2022-05-30 | 2022-07-22 | 深圳市德方纳米科技股份有限公司 | Coated positive electrode material and preparation method and application thereof |
| CN114927689A (en) * | 2022-04-29 | 2022-08-19 | 深圳市德方纳米科技股份有限公司 | Positive electrode material and preparation method and application thereof |
| CN116750802A (en) * | 2023-08-21 | 2023-09-15 | 中节能万润股份有限公司 | Preparation method and application of layered oxide sodium ion battery positive electrode material |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105244508A (en) * | 2015-11-06 | 2016-01-13 | 中国科学院青岛生物能源与过程研究所 | Lithium ion battery high-voltage positive electrode material surface coating method |
| US20170015693A1 (en) * | 2014-03-04 | 2017-01-19 | Empire Technology Development Llc | Acrylamide-based conductive compounds, and methods of preparation and uses thereof |
| WO2017156518A1 (en) * | 2016-03-11 | 2017-09-14 | University Of Houston System | High ionic conductivity rechargeable solid state batteries with an organic electrode |
| CN108448055A (en) * | 2018-03-12 | 2018-08-24 | 中国科学院物理研究所 | Anode material for lithium-ion batteries and preparation method thereof |
| CN109713247A (en) * | 2017-10-26 | 2019-05-03 | 荆门市格林美新材料有限公司 | Ion doping, nickel-cobalt lithium manganate cathode material of in-stiu coating and preparation method thereof |
| CN110444752A (en) * | 2019-08-12 | 2019-11-12 | 苏州大学 | Extended-life lithium ion battery tertiary cathode material and its preparation method and application |
-
2020
- 2020-01-07 CN CN202010015604.9A patent/CN111211299B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170015693A1 (en) * | 2014-03-04 | 2017-01-19 | Empire Technology Development Llc | Acrylamide-based conductive compounds, and methods of preparation and uses thereof |
| CN105244508A (en) * | 2015-11-06 | 2016-01-13 | 中国科学院青岛生物能源与过程研究所 | Lithium ion battery high-voltage positive electrode material surface coating method |
| WO2017156518A1 (en) * | 2016-03-11 | 2017-09-14 | University Of Houston System | High ionic conductivity rechargeable solid state batteries with an organic electrode |
| CN109713247A (en) * | 2017-10-26 | 2019-05-03 | 荆门市格林美新材料有限公司 | Ion doping, nickel-cobalt lithium manganate cathode material of in-stiu coating and preparation method thereof |
| CN108448055A (en) * | 2018-03-12 | 2018-08-24 | 中国科学院物理研究所 | Anode material for lithium-ion batteries and preparation method thereof |
| CN110444752A (en) * | 2019-08-12 | 2019-11-12 | 苏州大学 | Extended-life lithium ion battery tertiary cathode material and its preparation method and application |
Non-Patent Citations (2)
| Title |
|---|
| JU-HYUN CHO等: "A polymer electrolyte-skinned active material strategy toward high-voltagelithium ion batteries: a polyimide-coated LiNi0.5Mn1.5O4 spinel cathode material case", 《ENERGY & ENVIRONMENTAL SCIENCE》 * |
| ZHAOLIN LIU等: "Conformal poly(ethyl ɑ-cyanoacrylate) nano-coating for improving the interface stability of LiNi0.5Mn1.5O4", 《ELECTROCHIMICA ACTA》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113451568A (en) * | 2021-06-28 | 2021-09-28 | 五邑大学 | Preparation method of ester organic matter in-situ coated high-nickel cathode material |
| CN114927689A (en) * | 2022-04-29 | 2022-08-19 | 深圳市德方纳米科技股份有限公司 | Positive electrode material and preparation method and application thereof |
| CN114784283A (en) * | 2022-05-30 | 2022-07-22 | 深圳市德方纳米科技股份有限公司 | Coated positive electrode material and preparation method and application thereof |
| CN114784283B (en) * | 2022-05-30 | 2024-03-29 | 深圳市德方纳米科技股份有限公司 | Coated positive electrode material and preparation method and application thereof |
| CN116750802A (en) * | 2023-08-21 | 2023-09-15 | 中节能万润股份有限公司 | Preparation method and application of layered oxide sodium ion battery positive electrode material |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111211299B (en) | 2022-06-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111211299B (en) | Modified lithium ion battery positive electrode material coated with strong electronegative organic matter layer and preparation method thereof | |
| Liu et al. | Poly (2, 5-dihydroxy-1, 4-benzoquinonyl sulfide)(PDBS) as a cathode material for lithium ion batteries | |
| CN110429269B (en) | High-nickel ternary cathode material coated by polymer blend and preparation method thereof | |
| CN110061286B (en) | High-energy-density lithium ion battery with pre-lithiation effect and preparation method thereof | |
| CN109004229B (en) | Lithium ion battery positive electrode material additive, positive electrode material thereof and lithium ion secondary battery | |
| WO2010060348A1 (en) | Silicon negative electrode, lithium ion battery and method of preparing the same | |
| KR20090066021A (en) | Cathode and lithium battery using the same | |
| CN104789164A (en) | Binder for secondary battery providing excellent adhesion strength and cycle property | |
| KR101511412B1 (en) | Electrode for lithium secondary battery, lithium secondary battery using the same and fabrication method thereof | |
| CN107507961B (en) | Preparation method of conductive polymer modified lithium ion battery positive pole piece | |
| CN109786869B (en) | Application of polymer containing hindered amine structure in secondary lithium battery | |
| CN111934020B (en) | High-pressure-resistant all-solid-state lithium battery interface layer and in-situ preparation method and application thereof | |
| AU2021422773A1 (en) | Safe lithium-ion battery and manufacturing method therefor | |
| Zhao et al. | In situ modification strategy for development of room-temperature solid-state lithium batteries with high rate capability | |
| WO2014120970A1 (en) | Organometallic-inorganic hybrid electrodes for lithium-ion batteries | |
| Li et al. | Thin buffer layer assist carbon-modifying separator for long-life lithium metal anodes | |
| JP2022536290A (en) | In-situ polymerized polymer electrolyte for lithium-ion batteries | |
| CN102054966A (en) | Multilayer-film negative pole shoe and making method thereof | |
| CN102569724A (en) | Preparation method for composite material used for anode of lithium ion battery | |
| CA3177460A1 (en) | Advanced solid electrolyte membranes and batteries made therefrom | |
| CN111354950A (en) | Foil, preparation method thereof, battery cell, battery module and energy storage equipment | |
| CN103682355A (en) | Compound silicate anode material and lithium battery and preparation methods thereof, and communication equipment | |
| CN114388886B (en) | Polymer electrolyte, preparation method thereof and secondary battery | |
| CN112952100B (en) | Cobalt-free anode material slurry and preparation method and application thereof | |
| CN109802100A (en) | A kind of benzenetricarboxylic acid manganese water system Zinc ion battery anode and preparation method 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 | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220628 Address after: Yuelu District City, Hunan province 410083 Changsha Lushan Road No. 932 Patentee after: CENTRAL SOUTH University Patentee after: Shenzhen guotuo Intelligent Machinery Co., Ltd Address before: Yuelu District City, Hunan province 410083 Changsha Lushan Road No. 932 Patentee before: CENTRAL SOUTH University |