Nonaqueous secondary battery with lithium titanium cathode

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United States of America Patent

PATENT NO 6759168
APP PUB NO 20020026707A1
SERIAL NO

09986722

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Abstract

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A method for manufacturing a lithium secondary cell comprising a positive electrode containing a lithium titanate as an active material, a negative electrode containing a carbonaceous material as an active material, and an electrolytic solution comprising a solution of a lithium salt in an organic solvent. The lithium titanate preferably has a composition of the formula: Li.sub.x Ti.sub.y O.sub.4 (0.8.ltoreq.x.ltoreq.1.4 and 1.6.ltoreq.y.ltoreq.2.2). The lithium secondary cell has a high capacity suitable for use as a power source for a wristwatch and good charge-discharge properties, at a nominal voltage of 1.5 V.

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Patent Owner(s)

Patent OwnerAddress
HITACHI MAXELL ENERGY LTDKYOTO JAPAN KYOTO

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Asada, Akira Hyogo-ken, JP 10 108
Nishino, Takatomo Ono, JP 8 101
Yamasaki, Shinji Ibaraki, JP 41 299

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