Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Separator – retainer or spacer insulating structure
Reexamination Certificate
2007-07-03
2007-07-03
Tsang-Foster, Susy (Department: 1745)
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
Separator, retainer or spacer insulating structure
C429S231950
Reexamination Certificate
active
10381516
ABSTRACT:
A lithium secondary battery which comprises a negative electrode, a positive electrode, and disposed therebetween a polymer electrolyte comprising an ionically conductive polymer. The polymer electrolyte has a two-layer structure composed of a positive-electrode-side layer and a negative-electrode-side layer. The polymer electrolyte on the positive-electrode side contains a nonaqueous electrolytic solution containing a lithium salt in a higher concentration than that in the polymer electrolyte on the negative-electrode side. The battery is improved in charge/discharge cycling characteristics and high-load discharge characteristics.
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Mitate Takehito
Nishijima Motoaki
Nishimura Naoto
Sada Tsutomu
Takashima Yumiko
Chuo Tony
Dai-Ichi Kogyo Seiyaku Co. Ltd.
Miller, White, Zelano & Branigan, P.C.
Sharp Corporation
Tsang-Foster Susy
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