Carbonaceous electrodes for lithium cells

Details Carbonaceous electrodes for lithium cells Carbonaceous electrodes for lithium cells

H - Electricity

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319/75

H01M 4/26 (2006.01) D01F 11/12 (2006.01) H01M 4/58 (2006.01) H01M 4/60 (2006.01) H01M 10/28 (2006.01) H01M 10/40 (2006.01) H01M 4/62 (2006.01) H01M 10/44 (2006.01)

Patent

CA 2032137

A rechargeable battery of alkali metal, organic elec- trolyte type has a low surface area particulate carbona- ceous electrode (20) intercalable with the alkali metal and experiences little capacity loss upon intercalation of the carbonaceous electrode with the alkali metal. The carbona- ceous electrode (20) may include a multi-phase composi- tion including both highly graphitized (70) and less graphi- tized (80) phases or may include a single phase, highly graphitized composition which has been subjected to inter- calation of lithium at above about 50°C. Incorporation of an electrically conductive filamentary material (80) such as carbon black intimately interspersed with the carbona- ceous composition (70) minimizing capacity loss upon re- peated cycling.

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