CN108767245B - Mixed type anode material and manufacturing method thereof - Google Patents
Mixed type anode material and manufacturing method thereof Download PDFInfo
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- CN108767245B CN108767245B CN201810666780.1A CN201810666780A CN108767245B CN 108767245 B CN108767245 B CN 108767245B CN 201810666780 A CN201810666780 A CN 201810666780A CN 108767245 B CN108767245 B CN 108767245B
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- 239000010405 anode material Substances 0.000 title claims abstract description 16
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 19
- 239000011149 active material Substances 0.000 claims abstract description 16
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 claims abstract description 15
- 239000006258 conductive agent Substances 0.000 claims abstract description 12
- 239000011230 binding agent Substances 0.000 claims abstract description 10
- 238000000227 grinding Methods 0.000 claims abstract description 10
- 238000002360 preparation method Methods 0.000 claims abstract description 10
- 238000002156 mixing Methods 0.000 claims description 20
- AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical compound [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 claims description 18
- WOCIAKWEIIZHES-UHFFFAOYSA-N ruthenium(iv) oxide Chemical compound O=[Ru]=O WOCIAKWEIIZHES-UHFFFAOYSA-N 0.000 claims description 18
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 15
- 238000000498 ball milling Methods 0.000 claims description 15
- 239000002002 slurry Substances 0.000 claims description 13
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 12
- 239000010406 cathode material Substances 0.000 claims description 11
- 239000002994 raw material Substances 0.000 claims description 10
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 9
- AJNVQOSZGJRYEI-UHFFFAOYSA-N digallium;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Ga+3].[Ga+3] AJNVQOSZGJRYEI-UHFFFAOYSA-N 0.000 claims description 9
- QZQVBEXLDFYHSR-UHFFFAOYSA-N gallium(III) oxide Inorganic materials O=[Ga]O[Ga]=O QZQVBEXLDFYHSR-UHFFFAOYSA-N 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 7
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 6
- 238000005303 weighing Methods 0.000 claims description 6
- 235000010493 xanthan gum Nutrition 0.000 claims description 6
- 239000000230 xanthan gum Substances 0.000 claims description 6
- 229920001285 xanthan gum Polymers 0.000 claims description 6
- 229940082509 xanthan gum Drugs 0.000 claims description 6
- 229910021389 graphene Inorganic materials 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- IXPNQXFRVYWDDI-UHFFFAOYSA-N 1-methyl-2,4-dioxo-1,3-diazinane-5-carboximidamide Chemical compound CN1CC(C(N)=N)C(=O)NC1=O IXPNQXFRVYWDDI-UHFFFAOYSA-N 0.000 claims description 3
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 claims description 3
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 claims description 3
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- KTWOOEGAPBSYNW-UHFFFAOYSA-N ferrocene Chemical compound [Fe+2].C=1C=C[CH-]C=1.C=1C=C[CH-]C=1 KTWOOEGAPBSYNW-UHFFFAOYSA-N 0.000 claims description 3
- 230000007935 neutral effect Effects 0.000 claims description 3
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 claims description 3
- 239000001267 polyvinylpyrrolidone Substances 0.000 claims description 3
- 229920000036 polyvinylpyrrolidone Polymers 0.000 claims description 3
- 235000010413 sodium alginate Nutrition 0.000 claims description 3
- 239000000661 sodium alginate Substances 0.000 claims description 3
- 229940005550 sodium alginate Drugs 0.000 claims description 3
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 claims description 3
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 238000004544 sputter deposition Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims 4
- 238000003860 storage Methods 0.000 abstract description 6
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 3
- 239000010941 cobalt Substances 0.000 description 3
- 229910017052 cobalt Inorganic materials 0.000 description 3
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 3
- 229910001416 lithium ion Inorganic materials 0.000 description 3
- 229910000572 Lithium Nickel Cobalt Manganese Oxide (NCM) Inorganic materials 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- PFYQFCKUASLJLL-UHFFFAOYSA-N [Co].[Ni].[Li] Chemical compound [Co].[Ni].[Li] PFYQFCKUASLJLL-UHFFFAOYSA-N 0.000 description 2
- 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 2
- 230000007547 defect Effects 0.000 description 2
- QHGJSLXSVXVKHZ-UHFFFAOYSA-N dilithium;dioxido(dioxo)manganese Chemical compound [Li+].[Li+].[O-][Mn]([O-])(=O)=O QHGJSLXSVXVKHZ-UHFFFAOYSA-N 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 239000007774 positive electrode material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 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
- 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
- H01M4/625—Carbon or graphite
-
- 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
-
- 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
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- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention discloses a mixed type anode material and a preparation method thereof, wherein the mixed type anode material comprises 73-85% of an active material, 3-18% of a conductive agent, 5-7% of an oxide and 5-12% of a binder; the active material comprises lithium cobaltate and lithium iron phosphate, the compacted density of the anode material is effectively improved after reasonably grinding and optimizing the oxide and the active material, the electrical conductivity, the thermal conductivity, the high-temperature storage performance, the cycle performance and the safety performance of the battery are obviously improved by adding a plurality of oxides, the service life of the anode material is greatly prolonged, and the cycle performance, the high-temperature storage and the safety performance under high voltage are solved.
Description
Technical Field
The invention belongs to the technical field of lithium ion batteries, and particularly relates to a mixed type cathode material and a manufacturing method thereof.
Background
At present, lithium cobaltate, lithium nickelate, lithium manganate, lithium nickel cobalt manganese oxide, lithium nickel cobalt aluminate and lithium iron phosphate are mainly used as the anode material of the lithium ion battery, wherein the lithium cobaltate is still the mainstream in the market, but the defects of limited cobalt resource, high price, toxic cobalt, poor safety and the like limit the large-scale application of the lithium cobaltate in the future. Lithium nickelate has higher actual capacity than lithium cobaltate, and nickel has lower price than cobalt, but lithium nickelate is difficult to prepare and has poor thermal stability. The lithium manganate has the advantages of rich raw materials, low price, environmental friendliness and good thermal stability, but has low capacity and poor cycle performance; lithium nickel cobalt manganese oxide and lithium nickel cobalt aluminate have high energy density but poor thermal stability; lithium iron phosphate is low in price, rich in resources, good in cycle performance, excellent in thermal stability and environment-friendly, but the materials are poor in conductivity and low in density, cannot meet the use requirements of people and restrict further application of the lithium iron phosphate in the field of lithium ion battery anode materials.
Disclosure of Invention
Aiming at the defects of the prior art, the capacity, the high-temperature storage performance, the cycle performance and the safety performance of the battery are improved, and the invention aims to provide a mixed type cathode material and a manufacturing method thereof.
In order to achieve the purpose, the invention adopts the following technical scheme:
the mixed type anode material comprises 73-85% of active material, 3-18% of conductive agent, 5-7% of oxide and 5-12% of binder; the active material comprises lithium cobaltate and lithium iron phosphate, and the molar ratio of the lithium cobaltate to the lithium iron phosphate is (1-11): (2-9).
The conductive agent comprises the following raw materials of 60-75 parts of graphene, 30-35 parts of activated carbon, 2-5 parts of monoethanolamine, 4-5 parts of polyvinylpyrrolidone, 8-10 parts of xanthan gum and 35-40 parts of styrene; the preparation method comprises the following steps: firstly, mixing xanthan gum and styrene, and uniformly mixing at the temperature of 40-45 ℃ to obtain an organic carrier; then adding other residual raw materials, heating to 50-55 deg.C, adjusting ph to neutral, and mechanically stirring; then mixing the mixture on a three-roll grinder, and grinding the slurry to 10-15 microns in granularity to obtain the finished product.
The oxide is a mixture of manganese oxide, ruthenium dioxide and gallium sesquioxide, and the mixing ratio of manganese oxide, ruthenium dioxide and gallium sesquioxide is 6-9:2-3: 4-6.
The binder is prepared by mixing sodium carboxymethylcellulose and sodium alginate according to a ratio of 8-10: 1.
The preparation method of the mixed type cathode material comprises the following steps:
(1) preparing an oxide: weighing each oxide according to the mixing proportion of manganese oxide, ruthenium dioxide and gallium sesquioxide, feeding the oxides into a rotary furnace for presintering, heating to 700-800 ℃ at room temperature for 1-2 hours, and preserving heat and mixing materials for 2-3 hours; taking out and cooling, then grinding for 8-10 hours by adopting a grinding medium as an acetone solution, and controlling the grain diameter of the mixture to be 50-100 mu m;
(2) preparation of active material: weighing raw materials according to the molar ratio of lithium cobaltate to lithium iron phosphate, and putting the weighed materials into a ball milling tank for ball milling for 1-2 hours at the ball milling rotation speed of 100-120 rpm;
(3) pouring the oxide obtained in the step (1) into the active material obtained in the step (2), uniformly stirring, pouring a conductive agent and a binder, and continuously stirring or ball-milling for at least 1.5h to prepare slurry;
(4) and (4) spraying or sputtering the slurry prepared in the step (3) on a current collector, and drying at the temperature of 80-105 ℃ to obtain the anode material.
And (3) adopting an absolute ethyl alcohol solution for ball milling in the step (2), and adding ferrocene which is 5-10% of the mass of the absolute ethyl alcohol into the absolute ethyl alcohol solution.
And after the slurry is prepared, sending the slurry into ultrasonic waves for dispersion treatment for 10-15min, wherein the power of the ultrasonic waves is 280-350W.
The invention has the beneficial effects that:
compared with the prior art, the invention has at least the following advantages: according to the invention, after the oxide and the active material are reasonably ground and optimized, the compaction density of the anode material is effectively improved, and by adding a plurality of oxides, the electrical conductivity, the thermal conductivity, the high-temperature storage performance, the cycle performance and the safety performance of the battery are obviously improved, the service life of the anode material is greatly prolonged, and the cycle performance, the high-temperature storage and the safety performance under high voltage are solved.
According to the invention, the graphene and the activated carbon are introduced into the conductive agent, and the excellent conductivity of the graphene and the activated carbon is utilized, so that the capacity of an electrode material is improved, the internal resistance of the battery is reduced, the conductivity of the conductive agent is improved, and meanwhile, the cycle life of the battery is also prolonged.
Detailed Description
Example 1: the mixed type anode material comprises 76% of active material, 10% of conductive agent, 6% of oxide and 8% of binder; the active material comprises lithium cobaltate and lithium iron phosphate, and the molar ratio of the lithium cobaltate to the lithium iron phosphate is 5: 8.
the conductive agent comprises the following raw materials of 65g of graphene, 32g of activated carbon, 3g of monoethanolamine, 5g of polyvinylpyrrolidone, 8g of xanthan gum and 35g of styrene; the preparation method comprises the following steps: firstly, mixing xanthan gum and styrene, and uniformly mixing at the temperature of 40-45 ℃ to obtain an organic carrier; then adding other residual raw materials, heating to 50-55 deg.C, adjusting ph to neutral, and mechanically stirring; then mixing the materials on a three-roll grinder, and grinding the slurry to 15 microns in granularity to obtain the finished product.
The oxide is a mixture of manganese oxide, ruthenium dioxide and gallium sesquioxide, and the mixing ratio of manganese oxide, ruthenium dioxide and gallium sesquioxide is 7:2: 5.
The binder is prepared by mixing sodium carboxymethylcellulose and sodium alginate according to a ratio of 10: 1.
The preparation method of the mixed type cathode material comprises the following steps:
(1) preparing an oxide: weighing each oxide according to the mixing proportion of manganese oxide, ruthenium dioxide and gallium sesquioxide, feeding the oxides into a rotary furnace for presintering, heating to 750 ℃ at room temperature for 1.5 hours, and mixing the materials for 2-3 hours under heat preservation; taking out and cooling, then grinding for 10 hours by using a grinding medium as an acetone solution, and controlling the grain diameter of the mixture to be 100 mu m;
(2) preparation of active material: weighing raw materials according to the molar ratio of lithium cobaltate to lithium iron phosphate, putting the weighed materials into a ball milling tank for ball milling for 1.5 hours, wherein the ball milling rotating speed is 100rpm, and the ball milling adopts absolute ethyl alcohol solution, and ferrocene with the mass equivalent to 8% of the absolute ethyl alcohol is added into the absolute ethyl alcohol solution;
(3) pouring the oxide obtained in the step (1) into the active material obtained in the step (2), uniformly stirring, then pouring a conductive agent and a binder, continuously stirring or ball-milling for at least 1.5h to prepare slurry, and then sending the slurry into ultrasonic waves for dispersion treatment for 12min, wherein the power of the ultrasonic waves is 300W;
(4) and (4) spraying or sputtering the slurry prepared in the step (3) on a current collector, and drying at the temperature of 100 ℃ to obtain the cathode material.
Example 2: in this example, except for the positive electrode active material, lithium cobaltate and lithium iron phosphate are used in a molar ratio of 1: except for 9, the contents are the same as those of example 1.
Example 3: in this example, except that the positive electrode active material used was lithium cobaltate and lithium iron phosphate at a molar ratio of 11: except for 2, the contents are the same as those of example 1.
The test of this example 1 compares with the traditional battery:
when the working voltage is high (2.75V-4.2V), the conductivity and the high-temperature storage performance of the cathode material are superior to those of the traditional battery; the compacted density of the cathode material is between 2.5 and 3.2g/cc, and the safety of the cathode material takes the characteristics of the traditional battery, especially the overcharge resistance.
Claims (5)
1. The preparation method of the mixed type anode material is characterized in that the mixed type anode material comprises 73-85% of active material, 3-18% of conductive agent, 5-7% of oxide and 5-12% of binder; the active material comprises lithium cobaltate and lithium iron phosphate, and the molar ratio of the lithium cobaltate to the lithium iron phosphate is (1-11): (2-9);
the conductive agent comprises the following raw materials of 60-75 parts of graphene, 30-35 parts of activated carbon, 2-5 parts of monoethanolamine, 4-5 parts of polyvinylpyrrolidone, 8-10 parts of xanthan gum and 35-40 parts of styrene; the preparation method comprises the following steps: firstly, mixing xanthan gum and styrene, and uniformly mixing at the temperature of 40-45 ℃ to obtain an organic carrier; then adding other residual raw materials, heating to 50-55 deg.C, adjusting ph to neutral, and mechanically stirring; then mixing the materials on a three-roll grinder, and grinding the slurry to 10-15 microns in granularity to obtain a finished product;
the manufacturing method comprises the following steps:
(1) preparing an oxide: weighing each oxide according to the mixing proportion of manganese oxide, ruthenium dioxide and gallium sesquioxide, and feeding the oxides into a rotary furnace for presintering, wherein the presintering is to heat up to 700-; taking out and cooling, then grinding for 8-10 hours by adopting a grinding medium as an acetone solution, and controlling the grain diameter of the mixture to be 50-100 mu m;
(2) preparation of active material: weighing raw materials according to the molar ratio of lithium cobaltate to lithium iron phosphate, and putting the weighed materials into a ball milling tank for ball milling for 1-2 hours at the ball milling rotation speed of 100-120 rpm;
(3) pouring the oxide obtained in the step (1) into the active material obtained in the step (2), uniformly stirring, pouring a conductive agent and a binder, and continuously stirring or ball-milling for at least 1.5h to prepare slurry;
(4) and (4) spraying or sputtering the slurry prepared in the step (3) on a current collector, and drying at the temperature of 80-105 ℃ to obtain the anode material.
2. The method for manufacturing the mixed type cathode material according to claim 1, wherein the ball milling in the step (2) adopts an absolute ethyl alcohol solution, and ferrocene with the mass equivalent to 5% -10% of that of the absolute ethyl alcohol is added into the absolute ethyl alcohol solution.
3. The method as claimed in claim 1, wherein the slurry is prepared and then dispersed in ultrasonic wave for 10-15min, and the power of the ultrasonic wave is 280-350W.
4. The method for manufacturing the hybrid cathode material as claimed in claim 1, wherein the oxide is a mixture of manganese oxide, ruthenium dioxide and gallium sesquioxide, and the mixing ratio of manganese oxide, ruthenium dioxide and gallium sesquioxide is 6-9:2-3: 4-6.
5. The method for preparing the hybrid cathode material as claimed in claim 1, wherein the binder is prepared by mixing sodium carboxymethylcellulose and sodium alginate according to a ratio of 8-10: 1.
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| CN201810666780.1A CN108767245B (en) | 2018-06-26 | 2018-06-26 | Mixed type anode material and manufacturing method thereof |
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| CN201810666780.1A CN108767245B (en) | 2018-06-26 | 2018-06-26 | Mixed type anode material and manufacturing method thereof |
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| CN108767245B true CN108767245B (en) | 2021-07-02 |
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| CN111224058A (en) * | 2018-11-24 | 2020-06-02 | 深圳市三奇科技有限公司 | Method for preparing anode slurry of ultralow-temperature lithium ion battery |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101752549A (en) * | 2008-12-02 | 2010-06-23 | Tcl集团股份有限公司 | Lithium polymer battery and method for producing positive pole plate for same |
| CN102244264A (en) * | 2011-05-19 | 2011-11-16 | 江苏乐能电池股份有限公司 | Graphine composite electric conduction agent for iron phosphate lithium battery and preparation method thereof |
| US20130252105A1 (en) * | 2012-03-23 | 2013-09-26 | Samsung Corning Precision Materials Co., Ltd. | Positive electrode active material, method of preparing positive electrode active material, and lithium secondary battery using positive electrode active material |
| CN105390700A (en) * | 2015-11-16 | 2016-03-09 | 哈尔滨工业大学 | Method for modifying positive electrode of lithium ion battery by adding metal oxide/carbon composite material |
| CN106340640A (en) * | 2016-11-01 | 2017-01-18 | 上海电力学院 | Method for improving high temperature electrochemical property of lithium manganate anode material |
| CN107528054A (en) * | 2017-08-27 | 2017-12-29 | 长沙小新新能源科技有限公司 | A kind of graphene high power lithium battery anode composite slurry and preparation method thereof |
| CN107611402A (en) * | 2017-09-13 | 2018-01-19 | 天津理工大学 | Compound lithium-rich positive electrode and preparation method thereof |
-
2018
- 2018-06-26 CN CN201810666780.1A patent/CN108767245B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101752549A (en) * | 2008-12-02 | 2010-06-23 | Tcl集团股份有限公司 | Lithium polymer battery and method for producing positive pole plate for same |
| CN102244264A (en) * | 2011-05-19 | 2011-11-16 | 江苏乐能电池股份有限公司 | Graphine composite electric conduction agent for iron phosphate lithium battery and preparation method thereof |
| US20130252105A1 (en) * | 2012-03-23 | 2013-09-26 | Samsung Corning Precision Materials Co., Ltd. | Positive electrode active material, method of preparing positive electrode active material, and lithium secondary battery using positive electrode active material |
| CN105390700A (en) * | 2015-11-16 | 2016-03-09 | 哈尔滨工业大学 | Method for modifying positive electrode of lithium ion battery by adding metal oxide/carbon composite material |
| CN106340640A (en) * | 2016-11-01 | 2017-01-18 | 上海电力学院 | Method for improving high temperature electrochemical property of lithium manganate anode material |
| CN107528054A (en) * | 2017-08-27 | 2017-12-29 | 长沙小新新能源科技有限公司 | A kind of graphene high power lithium battery anode composite slurry and preparation method thereof |
| CN107611402A (en) * | 2017-09-13 | 2018-01-19 | 天津理工大学 | Compound lithium-rich positive electrode and preparation method thereof |
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