CN101853935A - Method for preparing anode material of lithium ion battery - Google Patents
Method for preparing anode material of lithium ion battery Download PDFInfo
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- CN101853935A CN101853935A CN201010211250A CN201010211250A CN101853935A CN 101853935 A CN101853935 A CN 101853935A CN 201010211250 A CN201010211250 A CN 201010211250A CN 201010211250 A CN201010211250 A CN 201010211250A CN 101853935 A CN101853935 A CN 101853935A
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- lithium ion
- ion battery
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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
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Abstract
The invention provides a method for preparing an anode material of a lithium ion battery, which comprises the following steps of: performing graphitization treatment on pitch coke or petroleum coke serving as raw materials, grinding the raw materials into powder in which the powder with a particle size of 15 to 20 mu m accumulates to 50 percent; then adding an additive containing a boron element and/or water into the powder; stirring the mixture to make various materials mixed sufficiently; then carrying out high-temperature treatment on the mixed mixture at the temperature of between 2,400 and 2,800 DEG C; and finally obtaining the anode material by crashing and sieving the obtained product. The preparation method of the invention has so simple a process as to lower cost. Compared with the conventional method, the method of the invention can save the production cost of over 20,000 RMB averagely for each ton of the materials. Moreover, in the process, basically no waste water, waste residue or waste gas is generated so the environmental protection requirement is met.
Description
Technical field
The present invention relates to the battery electrode material preparation method, particularly the preparation method of lithium cell cathode material.
Background technology
The negative material of lithium ion battery adopts graphite at present, and in order to improve battery capacity, or improve the cryogenic property of battery, all the study on the modification of graphite cathode material is being done various researchs or repaid examination, as adopt coated graphite method, graphite to expand layer etc., though these technologies can have some aspect to improve the negative material performance, but generally speaking, because all kinds of materials that comprise catalyst are controlled, needed to use to its technological process complexity, difficulty, cost is very high, production can't be adapted to, thereby actual production can not be converted into fully.
Summary of the invention
The present invention aims to provide that a kind of technology is simple, cost is low, the industrial process of the preparation lithium ion battery of environmental protection.Implementation of the present invention is as follows:
Adopting pitch coke or petroleum coke is raw material, under 2000～3000 ℃ of conditions petroleum coke or pitch coke is carried out graphitization processing, and constant temperature time is 2h～9h under the maximum temperature; Again raw material graphite is ground to form the powder of particle diameter to the 15～20 μ m of accumulation 50%, afterwards to wherein adding additive and/or the water that contains boron element, stirring fully mixes various materials, again mixed mixture is carried out high-temperature process under 2400～2800 ℃ of conditions afterwards, after pulverize, sieve negative material.The preferred pure boron of additive or the inorganic boride that contain boron element are as boron carbide etc.The adding mass ratio 100 of raw material, additive, water: (15～30): (0～15).
Compared with prior art, advantage of the present invention is:
1. the temperature of final high temperature processing at present needs more than 2800 ℃, and the present invention then can carry out high-temperature process below 2800 ℃, and therefore under the condition of guaranteed performance, the temperature of final step high-temperature process also descends to some extent, energy efficient.
2. this production method flow process is very simple, not only is easy to production control, and simultaneously cost is lower, and average surplus the production cost of material per ton can save 20,000 than existing methods yuan, and do not have waste water, waste residue, waste gas generation, compliance with environmental protection requirements in the flow process substantially.The negative material capacity of preparation also improves nearly 5% than current material.
Embodiment
Embodiment 1
Adopt the pitch coke raw material, under 2000 ℃ of conditions, carry out graphitization processing, constant temperature 9h; Afterwards raw material graphite is ground to form the powder of particle diameter to the 15 μ m of accumulation 50%, to wherein adding additive lonsdaleite boron and water, the adding mass ratio of raw material, additive, water is 100: 15: 10 afterwards; Stirring fully mixes above-mentioned various material, more mixed mixture is carried out high-temperature process under 2400 ℃ of conditions afterwards, after pulverize, sieve negative material.
Embodiment 2
Adopt the petroleum coke raw material, under 3000 ℃ of conditions, carry out graphitization processing, constant temperature 2h; Afterwards raw material graphite is ground to form the powder of particle diameter to the 18 μ m of accumulation 50%, to wherein adding the additive pure boron, the adding mass ratio of raw material and additive is 100: 20 afterwards; Stirring fully mixes above-mentioned various material, more mixed mixture is carried out high-temperature process under 2600 ℃ of conditions afterwards, after pulverize, sieve negative material.
Embodiment 3
Adopt the pitch coke raw material, under 2800 ℃ of conditions, carry out graphitization processing, constant temperature 6h; Afterwards raw material graphite is ground to form the powder of particle diameter to the 20 μ m of accumulation 50%, to wherein adding additive boronation nitrogen and water, the adding mass ratio of raw material, additive, water is 100: 30: 15 afterwards; Stirring fully mixes above-mentioned various material, more mixed mixture is carried out high-temperature process under 2800 ℃ of conditions afterwards, after pulverize, sieve negative material.
Embodiment 4
Adopt the material of the foregoing description and the material (Comparative Examples) of existing method preparation to be made into common lithium ion battery, the capacity of the same terms test battery, result such as following table respectively
| Test material | Battery capacity (mAh/g) |
| Embodiment 1 | ??342 |
| Embodiment 2 | ??350 |
| Embodiment 3 | ??355 |
| Comparative Examples | ??325 |
Experimental result shows, adopts the negative material of the inventive method preparation, and battery capacity can improve about 5%.
Claims (3)
1. industrial process for preparing lithium ion battery negative material is characterized in that: adopting pitch coke or petroleum coke is raw material, under 2000～3000 ℃ of conditions petroleum coke or pitch coke is carried out graphitization processing, and constant temperature time is 2h～9h under the maximum temperature; The particle diameter that raw material graphite is ground to form accumulation 50% is the powder of 15～20 μ m, afterwards to wherein adding additive and/or the water that contains boron element, stirring fully mixes various materials, again mixed mixture is carried out high-temperature process under 2400～2800 ℃ of conditions afterwards, after pulverize, sieve negative material.
2. the industrial process of preparation lithium ion battery negative material as claimed in claim 1 is characterized in that: described preferred pure boron of additive or the inorganic boride that contains boron element.
3. the industrial process of preparation lithium ion battery negative material as claimed in claim 1 or 2 is characterized in that: the adding mass ratio 100 of described raw material, additive, water: (15～30): (0～15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010211250A CN101853935A (en) | 2010-06-23 | 2010-06-23 | Method for preparing anode material of lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010211250A CN101853935A (en) | 2010-06-23 | 2010-06-23 | Method for preparing anode material of lithium ion battery |
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| Publication Number | Publication Date |
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| CN101853935A true CN101853935A (en) | 2010-10-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201010211250A Pending CN101853935A (en) | 2010-06-23 | 2010-06-23 | Method for preparing anode material of lithium ion battery |
Country Status (1)
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| CN (1) | CN101853935A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103441251B (en) * | 2013-08-22 | 2017-12-05 | 大连宏光锂业股份有限公司 | The production method of compound coating carbon negative electrode material of lithium ion cell |
| WO2018202377A1 (en) | 2017-05-03 | 2018-11-08 | Arcelik Anonim Sirketi | A battery |
| CN112670459A (en) * | 2019-12-09 | 2021-04-16 | 宁波杉杉新材料科技有限公司 | Graphite negative electrode material and preparation and application thereof |
| CN113086979A (en) * | 2021-04-02 | 2021-07-09 | 广州鹏辉能源科技股份有限公司 | Preparation method of graphite material, graphite material and application thereof, and lithium ion battery negative electrode material |
| CN116022781A (en) * | 2023-03-28 | 2023-04-28 | 宁波杉杉新材料科技有限公司 | Asphalt coke and graphite doped anode material, preparation method and application thereof, and lithium ion battery |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1383227A (en) * | 2001-04-26 | 2002-12-04 | 日本电池株式会社 | Nonaqueous electrolytic secondary battery |
| CN1986400A (en) * | 2005-12-23 | 2007-06-27 | 青铜峡市青鑫炭素有限责任公司 | Process of producing crushed graphite and graphited coke in an electric roaster |
-
2010
- 2010-06-23 CN CN201010211250A patent/CN101853935A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1383227A (en) * | 2001-04-26 | 2002-12-04 | 日本电池株式会社 | Nonaqueous electrolytic secondary battery |
| CN1986400A (en) * | 2005-12-23 | 2007-06-27 | 青铜峡市青鑫炭素有限责任公司 | Process of producing crushed graphite and graphited coke in an electric roaster |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103441251B (en) * | 2013-08-22 | 2017-12-05 | 大连宏光锂业股份有限公司 | The production method of compound coating carbon negative electrode material of lithium ion cell |
| WO2018202377A1 (en) | 2017-05-03 | 2018-11-08 | Arcelik Anonim Sirketi | A battery |
| CN112670459A (en) * | 2019-12-09 | 2021-04-16 | 宁波杉杉新材料科技有限公司 | Graphite negative electrode material and preparation and application thereof |
| CN112670459B (en) * | 2019-12-09 | 2022-11-08 | 宁波杉杉新材料科技有限公司 | Graphite negative electrode material and preparation and application thereof |
| CN113086979A (en) * | 2021-04-02 | 2021-07-09 | 广州鹏辉能源科技股份有限公司 | Preparation method of graphite material, graphite material and application thereof, and lithium ion battery negative electrode material |
| CN116022781A (en) * | 2023-03-28 | 2023-04-28 | 宁波杉杉新材料科技有限公司 | Asphalt coke and graphite doped anode material, preparation method and application thereof, and lithium ion battery |
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Application publication date: 20101006 |