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Passivation-free solid state battery

United States Patent

5,766,796
June 16, 1998
View the Complete Patent at the US Patent & Trademark Office
This invention pertains to passivation-free solid-state rechargeable batteries composed of Li.sub.4 Ti.sub.5 O.sub.12 anode, a solid polymer electrolyte and a high voltage cathode. The solid polymer electrolyte comprises a polymer host, such as polyacrylonitrile, poly(vinyl chloride), poly(vinyl sulfone), and poly(vinylidene fluoride), plasticized by a solution of a Li salt in an organic solvent. The high voltage cathode includes LiMn.sub.2 O.sub.4, LiCoO.sub.2, LiNiO.sub.2 and LiV.sub.2 O.sub.5 and their derivatives.
Abraham; Kuzhikalail M. (Needham, MA), Peramunage; Dharmasena (Norwood, MA)
EIC Laboratories, Inc. (Norwood, MA)
08/ 851,876
May 6, 1997
This invention was made with financial support from the Department of Energy under Contract No. DE-FG02-96ER82158. The U.S. Government has certain rights in this invention.