CN111987289A - Preparation method of storage battery negative electrode material - Google Patents
Preparation method of storage battery negative electrode material Download PDFInfo
- Publication number
- CN111987289A CN111987289A CN202010901131.2A CN202010901131A CN111987289A CN 111987289 A CN111987289 A CN 111987289A CN 202010901131 A CN202010901131 A CN 202010901131A CN 111987289 A CN111987289 A CN 111987289A
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- CN
- China
- Prior art keywords
- activated carbon
- carbon fiber
- negative electrode
- electrode material
- biomass
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- 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
- H01M4/139—Processes of manufacture
- H01M4/1393—Processes of manufacture of electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx
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- 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
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- 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
- H01M4/04—Processes of manufacture in general
- H01M4/0402—Methods of deposition of the material
- H01M4/0421—Methods of deposition of the material involving vapour deposition
- H01M4/0423—Physical vapour deposition
- H01M4/0426—Sputtering
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- 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
- H01M4/04—Processes of manufacture in general
- H01M4/0438—Processes of manufacture in general by electrochemical processing
- H01M4/045—Electrochemical coating; Electrochemical impregnation
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- 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
A preparation method of a negative electrode material of a storage battery comprises the following steps of 1, preparing a graphitized biomass activated carbon fiber plate; 2. performing magnetron sputtering on one surface of the graphitized biomass activated carbon fiber plate to form a copper layer; 3. electroplating an electrolytic copper layer as a current collecting layer; 4. cutting into the negative electrode material of the storage battery according to the process requirement.
Description
Technical Field
The invention relates to the field of battery preparation, in particular to a preparation method of a storage battery cathode material.
Background
The storage battery comprises a lithium ion battery, wherein the lithium ion battery comprises a negative electrode material, a positive electrode material, a diaphragm and an electrolyte, the negative electrode material of the lithium ion battery holds the battery capacity and safety life, in the negative electrode material of the lithium ion battery, a small part of market share is occupied by graphite-removed mesocarbon microbeads (MCMB), amorphous carbon, silicon or tin, and natural graphite and artificial graphite occupy more than 90% of the market share of the negative electrode material; the preparation method is that a conductive coating is brushed on an aluminum foil/copper foil, and then the dispersed nano conductive graphite and the surface conductive modified carbon particles are evenly and finely coated on the aluminum foil/copper foil; because the resistance value of the conductive coating is larger, the specific surface area of the nano conductive graphite and the surface conductive modified carbon particles is smaller, and the improvement of the performance of the lithium ion battery is restricted, a new preparation method of the cathode material of the storage battery is necessary to be provided for the purpose, and the preparation method comprises the preparation method of the cathode material of the lithium ion battery;
disclosure of Invention
A preparation method of a storage battery cathode material comprises a preparation method of a lithium ion battery cathode material, and is characterized by comprising the following processes:
a. preparing a graphitized biomass activated carbon fiber plate by using filler-free wood pulp paper as a biomass carbon source;
b. performing magnetron sputtering of a copper layer on one surface of the graphitized biomass activated carbon fiber board to serve as a conductive transition layer;
c. plating an electrolytic copper layer on one side of the graphitized biomass activated carbon fiber board, which is provided with the conductive transition copper layer through magnetron sputtering, as a current collecting layer;
d. cutting into the cathode material of the storage battery according to the process requirement, including the cathode material of the lithium ion battery.
Drawings
FIG. 1 is a schematic structural diagram of a negative electrode material of a storage battery;
Detailed Description
The invention is further described with reference to the accompanying drawings, but not limited thereto;
a preparation method of a storage battery negative electrode material (10) comprises a preparation method of a lithium ion battery negative electrode material, and is characterized by comprising the following processes:
1. preparing a graphitized biomass activated carbon fiber plate (11);
1.1, using non-filler wood pulp paper as a biomass carbon source, preheating the wood pulp paper at 50-80 ℃, and soaking the wood pulp paper in 20-30% by volume of phosphoric acid water (the degree of phosphoric acid is selected to be 85%) for 5 min;
1.2 draining (no baking and oven drying) and boxing bowl, feeding into a microwave oven, wherein the total microwave power of the production line is 30-300 KW; under the protection of nitrogen, raising the temperature at the rate of 5-20 ℃/min to 550 ℃ at the temperature of 450-;
1.3, carrying out post-treatment such as deactivation agent removal, hydrochloric acid boiling, water bleaching, drying and the like which are well known in the activated carbon industry; preparing a biomass active carbon fiber plate;
1.4 filling the biomass activated carbon fiber plate into a sagger, uniformly scattering nickel acetate powder with the thickness of 1-2mm on the surface of each biomass activated carbon fiber plate, sending the mixture into a microwave oven, raising the temperature rise rate to 900-950 ℃ at the speed of 5-20 ℃/min, preserving the heat for 30-60min, cooling the mixture to below 200 ℃, and taking out the mixture;
1.5, carrying out post-treatment such as deactivation agent removal, hydrochloric acid boiling, water bleaching, drying and the like which are well known in the activated carbon industry; preparing a graphitized biomass activated carbon fiber plate (11);
2. performing magnetron sputtering on one surface of the graphitized biomass activated carbon fiber plate (11) which is prepared by the process 1 to form a copper layer (12) to reach the thickness required by the process, and then, making a conductive transition layer;
magnetron sputtering equipment is commercialized, and a magnetron sputtering copper process is a mature conventional process;
3. plating an electrolytic copper layer (13) on the Faraday-sputtered copper layer (12) on the graphitized biomass activated carbon fiber plate to reach the thickness required by the process, and making a current collecting layer; faraday plating is also called wet plating, and wet plating is a mature conventional process;
4. and cutting the mixture into a storage battery negative electrode material (10) according to the process requirement, wherein the storage battery negative electrode material comprises a lithium ion battery negative electrode material.
Claims (1)
1. The preparation method of the negative electrode material of the storage battery comprises the following steps:
a. preparing a graphitized biomass activated carbon fiber plate (11);
a.1) adopting filler-free wood pulp paper as a biomass carbon source, preheating the wood pulp paper at 50-80 ℃, and soaking the wood pulp paper in 20-30% of phosphoric acid water by volume ratio (the purity of phosphoric acid is selected to be 85%) for 5 min;
a.2) draining (baking-free oven drying) and boxing bowl, feeding into a microwave oven, wherein the total microwave power of the production line is 30-300 KW; under the protection of nitrogen, raising the temperature at the rate of 5-20 ℃/min to 550 ℃ at the temperature of 450-;
a.3) carrying out post-treatment such as deactivation agent removal, hydrochloric acid boiling, water bleaching, drying and the like which are well known in the activated carbon industry; preparing a biomass active carbon fiber plate;
a.4) putting the biomass activated carbon fiber plates into a sagger, uniformly scattering nickel acetate powder with the thickness of 1-2mm on each biomass activated carbon fiber plate surface, sending the mixture into a microwave oven, raising the temperature rise rate to 900-950 ℃ at the speed of 5-20 ℃/min, preserving the heat for 30-60min, cooling the mixture to below 200 ℃, and taking out;
a.5) carrying out post-treatment such as deactivation agent removal, hydrochloric acid boiling, water bleaching, drying and the like which are well known in the activated carbon industry; preparing a graphitized biomass activated carbon fiber plate (11);
b. performing magnetron sputtering on one surface of the graphitized biomass activated carbon fiber plate (11) prepared by the process in the step a.1) to form a copper layer (12) to reach the thickness required by the process, and making a conductive transition layer;
magnetron sputtering equipment is commercialized, and a magnetron sputtering copper process is a mature conventional process;
c. plating an electrolytic copper layer (13) on the Faraday-sputtered copper layer (12) on the graphitized biomass activated carbon fiber plate to reach the thickness required by the process, and making a current collecting layer; faraday plating is also called wet plating, and wet plating is a mature conventional process;
d. and cutting the mixture into a storage battery negative electrode material (10) according to the process requirement, wherein the storage battery negative electrode material comprises a lithium ion battery negative electrode material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010901131.2A CN111987289A (en) | 2020-09-01 | 2020-09-01 | Preparation method of storage battery negative electrode material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010901131.2A CN111987289A (en) | 2020-09-01 | 2020-09-01 | Preparation method of storage battery negative electrode material |
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| Publication Number | Publication Date |
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| CN111987289A true CN111987289A (en) | 2020-11-24 |
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| CN202010901131.2A Pending CN111987289A (en) | 2020-09-01 | 2020-09-01 | Preparation method of storage battery negative electrode material |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101613100A (en) * | 2008-06-25 | 2009-12-30 | 中国科学院大连化学物理研究所 | The biomass-based graphitized carbon and the microwave preparation of carbon-carbon composite |
| CN102502598A (en) * | 2011-10-25 | 2012-06-20 | 合肥工业大学 | Catalytic graphitization method for wood powder |
| US20140037533A1 (en) * | 2012-07-31 | 2014-02-06 | Chih-Yung Wang | High modulus graphite fiber and manufacturing method thereof |
| CN106960960A (en) * | 2017-05-11 | 2017-07-18 | 天津理工大学 | A kind of preparation method of the flexible current-collecting body for the cycle performance for improving lithium ion battery negative material |
| CN107221450A (en) * | 2017-08-07 | 2017-09-29 | 侯梦斌 | A kind of capacitance electrode preparation method for asymmetric capacitor batteries |
| US20190048493A1 (en) * | 2017-08-14 | 2019-02-14 | Ching-Long Ong | Carbon fiber bundle forming device and method |
| CN110828195A (en) * | 2019-12-12 | 2020-02-21 | 广东风华高新科技股份有限公司 | Super capacitor pole piece with Cu transition layer and preparation method thereof |
-
2020
- 2020-09-01 CN CN202010901131.2A patent/CN111987289A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101613100A (en) * | 2008-06-25 | 2009-12-30 | 中国科学院大连化学物理研究所 | The biomass-based graphitized carbon and the microwave preparation of carbon-carbon composite |
| CN102502598A (en) * | 2011-10-25 | 2012-06-20 | 合肥工业大学 | Catalytic graphitization method for wood powder |
| US20140037533A1 (en) * | 2012-07-31 | 2014-02-06 | Chih-Yung Wang | High modulus graphite fiber and manufacturing method thereof |
| CN106960960A (en) * | 2017-05-11 | 2017-07-18 | 天津理工大学 | A kind of preparation method of the flexible current-collecting body for the cycle performance for improving lithium ion battery negative material |
| CN107221450A (en) * | 2017-08-07 | 2017-09-29 | 侯梦斌 | A kind of capacitance electrode preparation method for asymmetric capacitor batteries |
| US20190048493A1 (en) * | 2017-08-14 | 2019-02-14 | Ching-Long Ong | Carbon fiber bundle forming device and method |
| CN110828195A (en) * | 2019-12-12 | 2020-02-21 | 广东风华高新科技股份有限公司 | Super capacitor pole piece with Cu transition layer and preparation method thereof |
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Application publication date: 20201124 |