Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Electrode
Patent
1995-12-06
1997-12-23
Kalafut, Stephen
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
Electrode
429224, H01M 450
Patent
active
057005974
ABSTRACT:
Spinel insertion compounds Li.sub.1+x Mn.sub.2-x-y M.sub.y O.sub.4 wherein M is a transition metal, 0<x< about 0.33, 0.ltoreq.y<about 1, can have relatively low surface area at relatively large values of x when prepared with a novel two step heating method. Li.sub.1 Mn.sub.2-y M.sub.y O.sub.4 is first prepared between a critical temperature, T.sub.c, and about 900.degree. C. Then, a lithium salt is mixed therewith and reacted at a temperature between about 400.degree. C. and T.sub.c. 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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Dahn Jeffery Raymond
Gao Yuan
Sacken Ulrich Von
Zhong Qiming
Chaney Carol
Kalafut Stephen
Moli Energy (1990) Limited
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