Lithium ion secondary cell

Details Lithium ion secondary cell Lithium ion secondary cell

H - Electricity

01

M

H01M 4/24 (2006.01) C01B 31/04 (2006.01) C04B 35/52 (2006.01) H01M 4/02 (2006.01) H01M 4/04 (2006.01) H01M 4/26 (2006.01) H01M 4/38 (2006.01) H01M 4/58 (2006.01)

Patent

CA 2192429

This invention relates to a lithium ion secondary cell using as a negative electrode high purity graphite obtained by heating high purity silicon carbide to a temperature in excess of the sublimation temperature of silicon in a reduc- ing atmosphere. As inexpensive high purity graphite is produced by a mass-producing process, the invention can provide inexpensise lithium ion secondary cell having a large discharge capacity.

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