Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Include electrolyte chemically specified and method
Patent
1996-08-23
1999-01-12
Kalafut, Stephen
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
Include electrolyte chemically specified and method
429192, 296231, H01M 1040
Patent
active
058585737
ABSTRACT:
This invention features the use of redox reagents, dissolved in non-aqueous electrolytes, to provide overcharge protection for cells having lithium metal or lithium-ion negative electrodes (anodes). In particular, the invention features the use of a class of compounds consisting of thianthrene and its derivatives as redox shuttle reagents to provide overcharge protection. Specific examples of this invention are thianthrene and 2,7-diacetyl thianthrene. One example of a rechargeable battery in which 2,7-diacetyl thianthrene is used has carbon negative electrode (anode) and spinet LiMn.sub.2 O.sub.4 positive electrode (cathode).
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Prema, S. and Srinivasan, M., "Preparation and Properties of Polyamides Containing Thianthrene Units," Eur. Polym. J., vol. 23, No. 11, pp. 897-903, 1987. (Month unknown).
Abraham Kuzhikalail M.
Foo Conrad C.
Pasquariello David M.
Rohan James F.
EIC Laboratories Inc.
Kalafut Stephen
Kelly Edward J.
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