Title:
CARBON MATERIAL FOR NONAQUEOUS SOLVENT SECONDARY BATTERY NEGATIVE ELECTRODE
Document Type and Number:
Japanese Patent JP3489600
Kind Code:
B2
Abstract:
PURPOSE: To obtain a high performance material, and use this as a negative electrode by baking it while maintaining vapor partial pressure in a kiln by a volatile component from carbon powder under a prescribed condition.
CONSTITUTION: Raw material carbon powder on which the atomic ratio of H/C is 0.5 to 0.05 and the carbon content is not less than 85wt.% and an average particle diameter is not more than 100 micron is baked. In this case, carbon powder is obtained by baking it while maintaining vapor partial pressure in a kiln by a volatile component from the carbon powder at baking temperature of 800 to 1500°C under 30mmHg. This carbon powder is used as a negative electrode and a lithium secondary battery having desired performance can be obtained.
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Inventors:
Yuzuru Takahashi
Yoshio Oishi
Koichi Kida
Yoshio Oishi
Koichi Kida
Application Number:
JP31057394A
Publication Date:
January 19, 2004
Filing Date:
December 14, 1994
Export Citation:
Assignee:
Mitsubishi Gas Chemical Co., Ltd.
International Classes:
H01M10/05; C01B31/02; H01M4/133; H01M4/1393; H01M4/587; H01M10/0525; H01M10/0566; (IPC1-7): H01M4/58; H01M4/02
Domestic Patent References:
| JP689721A | ||||
| JP864207A | ||||
| JP8115723A | ||||
| JP8222273A | ||||
| JP6145669A |