H - Electricity – 01 – M
Patent
H - Electricity
01
M
H01M 10/02 (2006.01) C01B 31/04 (2006.01) C04B 35/52 (2006.01) H01M 4/36 (2006.01) H01M 4/38 (2006.01) H01M 4/58 (2006.01)
Patent
CA 2173765
A carbon material having a superior reversibility in the lithium intercalation-deintercalation reaction is used in a non-aqueous secondary battery as the active material for the negative electrode. The result is a high energy density and excellent rapid charging and discharging characteristics. Graphite powder having a maximum particle diameter of less than 100 µm and a fraction of rhombohedral structure in the crystalline structure of less than 20% is used as the active material for the negative electrode of the battery. This graphite powder can be obtained by pulverizing raw graphite with a jet mill, and subsequently treating the powder at a temperature equal to or higher than 900°C.
Honbo Hidetoshi
Horiba Tatsuo
Ishii Yoshito
Momose Hideto
Muranaka Yasushi
Hitachi Ltd.
Kirby Eades Gale Baker
LandOfFree
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