LITHIUM SECONDARY BATTERY

Japanese Patent JP3291260

B2

PROBLEM TO BE SOLVED: To make a battery thin by setting a coefficient of cubic expansion (the volume ratio of lithium ion storing time to lithium ion release time) of a negative electrode body larger than a positive electrode body, and setting a thickness of the negative electrode body not more than half the thickness of the positive electrode body with discharge time as a reference.
SOLUTION: In a lithium secondary battery, while a positive electrode body desirably includes lithium containing oxide of one metal selected from a group composed of cobalt, manganese and nickel, a negative electrode body includes one selected from among a group composed of tin oxide, silicon oxide, lithium transition metal composite nitride and a silicon/carbon complex, and includes a silicon/carbon composite baking body obtained by heat-treating silicon or the compound in the presence of an organic material or a carbon material, and the negative electrode body is a sintered body having a thickness of 20 to 500 μm or a paint film body which has a thickness of 20 to 150 μm. Thus, storing/releasing quantity of a lithium ion and a superior cycle characteristic in the same as the conventional cases can be obtained, while thinning the battery.

JPH01157066	LITHIUM SECONDARY BATTERY
JP2001266870	NEGATIVE ELECTRODE MATERIAL FOR SECONDARY BATTERY, ITS MANUFACTURING METHOD AND SECONDARY BATTERY USING THE SAME
JPS6097566	SHEET-LIKE BATTERY

Tetsuya Kusakabe
Atsushi Suzuki
Nobuyuki Isshiki

JP36191198A

June 10, 2002

December 03, 1998

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Kao Corporation

H01M10/05; H01M4/13; H01M4/133; H01M4/134; H01M4/136; H01M4/36; H01M4/48; H01M4/58; H01M10/052; H01M10/0585; H01M10/0587; (IPC1-7): H01M10/40; H01M4/02; H01M4/58

JP200012092A
JP7263028A

Aoyama Ryo (2 outside people)

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