CN106450244A - Lithium ion battery anode material preparation method - Google Patents
Lithium ion battery anode material preparation method Download PDFInfo
- Publication number
- CN106450244A CN106450244A CN201611174371.7A CN201611174371A CN106450244A CN 106450244 A CN106450244 A CN 106450244A CN 201611174371 A CN201611174371 A CN 201611174371A CN 106450244 A CN106450244 A CN 106450244A
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- CN
- China
- Prior art keywords
- lithium
- active material
- ion battery
- gel
- preparation
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Classifications
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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
- H01M4/36—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
Abstract
The invention discloses a lithium ion battery anode material preparation method. Based on a gel sol method, the gel sol method is improved, and an anode material comprises at least one anode active material of lithium cobalt oxide, lithium manganate and lithium iron phosphate. The preparation method includes the steps: firstly, uniformly mixing the anode active material, additives and conductive agents in organic solvents according to a certain proportion; evaporating the solvents by heating to prepare a composition of the anode active material and the additives; adding a certain amount of citric acid and dispersed graphene gel into the composition, heating and stirring the composition for a long time to form uniform sol and then adding quantitative ammonia water to adjust PH (potential of hydrogen) values; finally, performing vacuum drying to prepare dried gel, and performing defoaming, discharging, coating, slide preparation and cell manufacture. The gel sol method is effectively improved, and material shrinking percentage in drying can be effectively increased, so that the high-temperature performance and the discharge performance of a battery are improved.
Description
Technical field
The present invention relates to a kind of method for preparing anode material of lithium-ion battery.
Background technology
New energy technology is acknowledged as the new and high technology in 21st century, and battery industry is used as the important composition of new energy field
Part, it has also become the new focus of of global economic development.Lithium ion battery is as a kind of important energy source quilt at present
People use on a large scale, and either in telecommunications field, or in traffic and transport field etc., it all takes on particularly important
Role, have a wide range of applications.Lithium ion battery running voltage is high, specific energy is high, capacity is big, self discharge is little, circulation
The good, long service life of property, lightweight, small volume, are the representatives of modern high performance battery, are mobile phone, notebook computer etc.
The ideal source of portable electric appts, and be expected to become the major impetus source of following electric automobile, cordless power tool etc.
One of.Lithium ion battery is mainly made up of positive electrode, negative material, isolated material and electrolyte etc., the performance of positive electrode
The property indices of lithium ion battery are directly affects, and core status are occupied in lithium ion battery.However as application neck
Constantly the widening of domain, the inferior restriction of the high-temperature behavior of lithium ion battery is further obvious, limits giving full play to for its function.
Content of the invention
It is an object of the invention to overcoming defect present in prior art, there is provided a kind of anode material for lithium-ion batteries
Preparation method, improves sol-gel process and effectively improves material shrinkage factor when drying, so as to improve high-temperature behavior and the electric discharge of battery
Performance.
For achieving the above object, technical scheme is comprised the following steps：
（1）Cathode active material, additive and conductive agent organic solvent are pressed（85-93%）：（1-3%）：（5-7%）Ratio
Example is uniform in organic solvent to be mixed；400-800 degrees Centigrade by solvent evaporation be obtained positive active material, additive and
The compositionss of conductive agent；
（2）A certain amount of citric acid and scattered Graphene glue are added under 5-10 hour is higher than 400 degrees Celsius
Heated and stirred forms uniform colloidal sol, adds quantitative ammonia and adjusts pH value；
（3）It is put in vacuum drying oven and dries 12 hours under 320 degree, prepared xerogel；
（4）Discharging, coating, film-making, make battery core.
Preferably, described positive electrode is by least one positive-active in cobalt acid lithium, LiMn2O4, LiFePO4
Material is constituted.
The present invention is effectively improved sol-gel process, can effectively improve material shrinkage factor when drying, so as to improve the height of battery
Warm nature energy and discharge performance.
Specific embodiment
With reference to embodiment, the specific embodiment of the present invention is further described.Following examples are only used for more
Plus technical scheme is clearly demonstrated, and can not be limited the scope of the invention with this.
The technical scheme that the present invention is embodied as is：
（1）Cathode active material, additive and conductive agent organic solvent are pressed（85-93%）：（1-3%）：（5-7%）Ratio
Example is uniform in organic solvent to be mixed；400-800 degrees Centigrade by solvent evaporation be obtained positive active material, additive and
The compositionss of conductive agent；
（2）A certain amount of citric acid and scattered Graphene glue are added under 5-10 hour is higher than 400 degrees Celsius
Heated and stirred forms uniform colloidal sol, adds quantitative ammonia and adjusts pH value；
（3）It is put in vacuum drying oven and dries 12 hours under 320 degree, prepared xerogel；
（4）Discharging, coating, film-making, make battery core.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, on the premise of without departing from the technology of the present invention principle, some improvements and modifications can also be made, these improvements and modifications
Also protection scope of the present invention should be regarded as.
Claims (2)
1. a kind of method for preparing anode material of lithium-ion battery, it is characterised in that positive electrode is by cobalt acid lithium, LiMn2O4, phosphoric acid
At least one positive active material in ferrum lithium is constituted.
2. the preparation method of the based lithium-ion battery positive plate according to claim 1, it is characterised in that walk including following
Suddenly：
（1）Cathode active material, additive and conductive agent organic solvent are pressed（85-93%）：（1-3%）：（5-7%）Ratio
Example is uniform in organic solvent to be mixed；Heat the compositionss that solvent evaporation is obtained positive active material, additive and conductive agent；
（2）A certain amount of citric acid and scattered Graphene glue is added to be formed all through the heated and stirred of 5-10 hour
Even colloidal sol, adds quantitative ammonia and adjusts pH value；
（3）It is put in vacuum drying oven and dries 12 hours under 320 degrees Celsius, prepared xerogel；
（4）Discharging, coating, film-making, make battery core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611174371.7A CN106450244A (en) | 2016-12-19 | 2016-12-19 | Lithium ion battery anode material preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611174371.7A CN106450244A (en) | 2016-12-19 | 2016-12-19 | Lithium ion battery anode material preparation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106450244A true CN106450244A (en) | 2017-02-22 |
Family
ID=58216884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611174371.7A Pending CN106450244A (en) | 2016-12-19 | 2016-12-19 | Lithium ion battery anode material preparation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106450244A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020248679A1 (en) * | 2019-06-13 | 2020-12-17 | Greenovelty Energy Co. Limited | Cathode slurry for secondary battery |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104393240A (en) * | 2014-11-14 | 2015-03-04 | 无锡中洁能源技术有限公司 | Preparation method of slurry for lithium-ion battery positive electrode |
| CN105110318A (en) * | 2015-07-23 | 2015-12-02 | 深圳市国创新能源研究院 | Graphene aqueous slurry, and preparation method thereof |
| CN105940530A (en) * | 2014-03-24 | 2016-09-14 | 昭和电工株式会社 | Slurry for positive electrode of lithium ion secondary cell, positive electrode obtained using said slurry, method for manufacturing said positive electrode, lithium ion secondary cell formed using said positive electrode, and method for manufacturing said cell |
-
2016
- 2016-12-19 CN CN201611174371.7A patent/CN106450244A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105940530A (en) * | 2014-03-24 | 2016-09-14 | 昭和电工株式会社 | Slurry for positive electrode of lithium ion secondary cell, positive electrode obtained using said slurry, method for manufacturing said positive electrode, lithium ion secondary cell formed using said positive electrode, and method for manufacturing said cell |
| CN104393240A (en) * | 2014-11-14 | 2015-03-04 | 无锡中洁能源技术有限公司 | Preparation method of slurry for lithium-ion battery positive electrode |
| CN105110318A (en) * | 2015-07-23 | 2015-12-02 | 深圳市国创新能源研究院 | Graphene aqueous slurry, and preparation method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020248679A1 (en) * | 2019-06-13 | 2020-12-17 | Greenovelty Energy Co. Limited | Cathode slurry for secondary battery |
| CN114365307A (en) * | 2019-06-13 | 2022-04-15 | 坚能创智有限公司 | Method for preparing cathode of secondary battery |
| CN114365307B (en) * | 2019-06-13 | 2023-10-13 | 坚能创智有限公司 | Method for preparing cathode of secondary battery |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170222 |
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| RJ01 | Rejection of invention patent application after publication |