Method of preparing Li.sub.1+x MN.sub.2-x O.sub.4 for use as secondary battery electrode
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United States of America Patent
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Feb 23, 1999
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app pub date -
Mar 12, 1997
filing date -
Oct 6, 1995
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Abstract
A continuous method of preparing a single phase lithiated manganese oxide intercalation compound of the formula Li.sub.1+x Mn.sub.2-x O.sub.4 comprising the steps of: mixing intimately a lithium hydroxide or a lithium salt and a manganese oxide or a manganese salt; feeding the intimately mixed salts to a reactor; continuously agitating the mixed salts in the reactor; heating the agitated mixed salts in the reactor at a temperature of from about 650 .degree. C. to about 800.degree. C. for a time not in excess of about 4 hours in an oxygen-containing atmosphere; and cooling the reacted product to less than about 200.degree. C. in an oxygen-containing atmosphere for a time not in excess of about 2 hours.
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