High voltage insertion compounds for lithium batteries

Details High voltage insertion compounds for lithium batteries High voltage insertion compounds for lithium batteries

C - Chemistry, Metallurgy

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C01G 45/00 (2006.01) C01G 53/00 (2006.01) H01M 4/24 (2006.01) H01M 4/62 (2006.01) H01M 6/10 (2006.01) H01M 4/48 (2006.01) H01M 4/50 (2006.01) H01M 10/40 (2006.01)

Patent

CA 2158242

Insertion compounds having the formula Lix+yMzMn2-y-zO4 wherein the crystal structure is spinel-like, M is a transition metal, 0x<1, 0y < 0.33, and 0<z< about 1, can reversibly insert significant amounts of lithium at poten- tials greater than about 4.5 volts versus Li/Li+. In particular, M can be Ni or Cr. The reversible amount of lithium at such voltages can be greater for greater values of z. Such insertion compounds are suitable cathode materials for high voltage lithium batteries.

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