Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Include electrolyte chemically specified and method
Patent
1991-01-28
1993-03-23
Skapars, Anthony
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
Include electrolyte chemically specified and method
429218, 429224, H01M 1040
Patent
active
051962799
ABSTRACT:
A lithium metal free non-aqueous secondary battery including a carbon anode and a lithium manganese oxide cathode is described. In operation, lithium from the lithium manganese oxide positive electrode intercalates with the carbon negative electrode and in this manner lithium ions are rocked back and forth during charge-discharge cycling. Lithium manganese oxide of the formula Li.sub.2 Mn.sub.2 O.sub.4 may also be used as the cathode and this material may be prepared by a novel technique which involves reacting LiMn.sub.2 O.sub.4 with lithium iodide at low temperatures (150.degree. C.), or alternatively by refluxing LiMn.sub.2 O.sub.4 in an acetonitrile solution of lithium iodide.
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"Li.sub.x CoO.sub.2 (0<x.ltoreq.1) A New Cathode Material for Batteries of High Energy Density", K. Mizushima et al., Mat. Res. Bull., 15, 1980, 783-789.
"Electrochemical Extraction of Lithium from LiMn.sub.2 O.sub.4 " M. M. Thackery et al., Mat. Res. Bull., 19, 1984, 179-187.
"Studies of Lithium Intercalation into Carbons Using Nonaqueous Electrochemical Cells", Rosamaria Fong et al., Journal of the Electrochemical Society, 107, (Jul. 1990) 2009-2013.
Bell Communications Research Inc.
Skapars Anthony
Suchyta Leonard Charles
White Lionel N.
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