Title:
NEGATIVE ELECTRODE MATERIAL FOR LITHIUM ION SECONDARY BATTERY, ITS MANUFACTURING METHOD, AND BATTERY USING THE SAME
Document Type and Number:
Japanese Patent JP3915072
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a negative electrode material for a lithium ion secondary battery in which a discharge capacity is as high as over 400 mAh/g, in which capacity loss is less, which is superior in cycle characteristics, and which can also be put into practice as a battery, and its manufacturing method.
SOLUTION: This negative electrode material for the lithium ion secondary battery is obtained by heating and mixing graphite powder, a carbon precursor, a polycarbosilane fine powder, and silicon fine powder and baking the mixture. The negative electrode material is manufactured by heating and mixing the carbon precursor with the graphite powder together with the polycarbosilane fine powder and the silicon fine powder and then by baking the mixture at 800 to 1,200°C.
Inventors:
Takanobu Kawai
Kenichi Motokawa
Kyoko Kataoka
Kenichi Motokawa
Kyoko Kataoka
Application Number:
JP2003087188A
Publication Date:
May 16, 2007
Filing Date:
March 27, 2003
Export Citation:
Assignee:
Nippon Carbon Co., Ltd.
International Classes:
H01M10/05; H01M4/02; H01M4/36; H01M4/587; (IPC1-7): H01M4/58; H01M4/02; H01M10/40
Domestic Patent References:
| JP2000203818A | ||||
| JP2002231225A |
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