CN102522525A - Lithium ion negative electrode material and preparation method thereof - Google Patents
Lithium ion negative electrode material and preparation method thereof Download PDFInfo
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- CN102522525A CN102522525A CN201110425888XA CN201110425888A CN102522525A CN 102522525 A CN102522525 A CN 102522525A CN 201110425888X A CN201110425888X A CN 201110425888XA CN 201110425888 A CN201110425888 A CN 201110425888A CN 102522525 A CN102522525 A CN 102522525A
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- negative electrode
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- conductive agent
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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 relates to a lithium ion negative electrode material and a preparation method thereof. The lithium ion negative electrode material comprises the following raw materials, by weight, 90-95% of a negative electrode material PPP-700 having a granularity of equal to or less than 0.5mum and a carbon nanostructure, 2-10% of a conductive agent graphite, 2-5% of a thickening agent carboxymethylcellulose sodium, 1.5-5% of an adhesive butadiene styrene rubber, and a solvent water with the weight accounting for 70-100% of the total weight of the negative electrode material, the conductive agent, the thickening agent and the adhesive. The lithium ion negative electrode material which has the advantages of low cost, high cell finishing rate, simple preparation process, high discharge rate and good cycle performance has a good popularization prospect.
Description
Technical field
The present invention relates to the manufacturing technology of battery material, especially a kind of ion cathode material lithium and preparation method thereof.
Background technology
Lithium ion battery is a kind of new and effective chemical power source; Be widely used in portable type electronic product; Improvement along with material progress and battery technology; The scope that is applied to of lithium ion battery is also enlarging, demands for higher performance such as this useful life, discharge-rate to lithium ion battery, and the raising of lithium ion battery performance is decided by the change of negative material performance and specific capacity on degree very.
Summary of the invention
The purpose of this invention is to provide that a kind of cost is low, the battery rate of finished products is high, manufacture craft is simple, discharge-rate is high, a kind of ion cathode material lithium of good cycle and preparation method thereof.
The technical solution adopted for the present invention to solve the technical problems is: a kind of ion cathode material lithium and preparation method thereof, contain the raw material of following weight portion:
Negative material: PPP-700 and granularity≤0.5 μ m carbon nano-structured 90～95%
Conductive agent: graphite 2～10%
Thickener: sodium carboxymethylcellulose 2～5%
Adhesive: butadiene-styrene rubber 1.5～5%
Solvent: water, its weight are 70～100% of negative material, conductive agent, thickener and adhesive total weights.
Preparation method of the present invention is: mixer is put into required negative material, conductive agent, thickener, adhesive in (1), fully mixes, and adds aqueous solvent again, mixes, and processes cathode size; (2) the above-mentioned slurry that has prepared is coated on Copper Foil or the copper mesh with coating machine, the thickness of coating is 45 μ m～200 μ m; (3) dried 10～20 minutes down at 100-130 ℃, press with pricking film machine bundle, the coat thickness that makes negative plate is 30 μ m～160 μ m; (4) be cut into suitable dimensions on demand, two side welds wide along pole piece connect two lugs.
The invention has the beneficial effects as follows: a kind of ion cathode material lithium and preparation method thereof cost is low, the battery rate of finished products high, manufacture craft is simple, discharge-rate is high, good cycle, has the excellent popularization prospect.
Embodiment
Below in conjunction with embodiment the present invention is described further.
Embodiment 1
Negative material: PPP-700 and granularity≤0.5 μ m carbon nano-structured 90%
Conductive agent: graphite 3%
Thickener: sodium carboxymethylcellulose 2%
Adhesive: butadiene-styrene rubber 5%
Solvent: water, its weight are 95% of negative material, conductive agent, thickener and adhesive total weights.
Its preparation method is: mixer is put into required negative material, conductive agent, thickener, adhesive in (1), fully mixes, and adds aqueous solvent again, mixes, and processes cathode size; (2) the above-mentioned slurry that has prepared is coated on Copper Foil or the copper mesh with coating machine, the thickness of coating is 45 μ m～200 μ m; (3) dried 10～20 minutes down at 100-130 ℃, press with pricking film machine bundle, the coat thickness that makes negative plate is 30 μ m～160 μ m; (4) be cut into suitable dimensions on demand, two side welds wide along pole piece connect two lugs.
Embodiment 2
Negative material: PPP-700 and granularity≤0.5 μ m carbon nano-structured 92%
Conductive agent: graphite 2%
Thickener: sodium carboxymethylcellulose 2%
Adhesive: butadiene-styrene rubber 2%
Solvent: water, its weight are 80% of negative material, conductive agent, thickener and adhesive total weights.
Its preparation method is with embodiment 1.
Claims (2)
1. ion cathode material lithium and preparation method thereof is characterized in that: the raw material that contains following weight portion:
Negative material: PPP-700 and granularity≤0.5 μ m carbon nano-structured 90～95%
Conductive agent: graphite 2～10%
Thickener: sodium carboxymethylcellulose 2～5%
Adhesive: butadiene-styrene rubber 1.5～5%
Solvent: water, its weight are 70～100% of negative material, conductive agent, thickener and adhesive total weights.
2. according to said a kind of ion cathode material lithium of claim 1 and preparation method thereof; It is characterized in that: preparation method of the present invention is: mixer is put into required negative material, conductive agent, thickener, adhesive in (1); Fully mix; Add aqueous solvent again, mix, process cathode size; (2) the above-mentioned slurry that has prepared is coated on Copper Foil or the copper mesh with coating machine, the thickness of coating is 45 μ m～200 μ m; (3) dried 10～20 minutes down at 100-130 ℃, press with pricking film machine bundle, the coat thickness that makes negative plate is 30 μ m～160 μ m; (4) be cut into suitable dimensions on demand, two side welds wide along pole piece connect two lugs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110425888XA CN102522525A (en) | 2011-12-19 | 2011-12-19 | Lithium ion negative electrode material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110425888XA CN102522525A (en) | 2011-12-19 | 2011-12-19 | Lithium ion negative electrode material and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102522525A true CN102522525A (en) | 2012-06-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201110425888XA Pending CN102522525A (en) | 2011-12-19 | 2011-12-19 | Lithium ion negative electrode material and preparation method thereof |
Country Status (1)
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| CN (1) | CN102522525A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103647040A (en) * | 2013-11-12 | 2014-03-19 | 江苏华东锂电技术研究院有限公司 | Electrode slurry, negative electrode and lithium ion battery using negative electrode |
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2011
- 2011-12-19 CN CN201110425888XA patent/CN102522525A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103647040A (en) * | 2013-11-12 | 2014-03-19 | 江苏华东锂电技术研究院有限公司 | Electrode slurry, negative electrode and lithium ion battery using negative electrode |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C05 | Deemed withdrawal (patent law before 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120627 |