Method for preparing li1+xmn2-x-ymyo4 for use in lithium...

Details Method for preparing li1+xmn2-x-ymyo4 for use in lithium... Method for preparing li1+xmn2-x-ymyo4 for use in lithium...

C - Chemistry, Metallurgy

01

G

C01G 45/00 (2006.01) H01M 10/24 (2006.01) H01M 4/50 (2006.01)

Patent

CA 2163695

Spinel insertion compounds Li1+xMn2-x-MyO4 wherein M is a transition metal, 0<x< about 0.33, 0~ y<about 1, can have relatively low surface area at relatively large values of x when prepared with a novel two step heating method. Li1Mn2-yMyO4 is first prepared between a critical temperature, Tc and about 900°C. Then, a lithium salt is mixed therewith and reacted at a temperature between about 400°C and Tc. These compounds are suitable for use as a cathode in a lithium battery. The use of LiCl as the lithium salt can provide improved cycle life results in such a battery.

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