Nonaqueous electrolyte secondary battery

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United States of America Patent

PATENT NO 7727676
SERIAL NO

11454925

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Abstract

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The present invention provides a nonaqueous electrolyte secondary battery, comprising an electrode group including a positive electrode, a negative electrode including a material for absorbing-desorbing lithium ions, and a separator arranged between the positive electrode and the negative electrode, a nonaqueous electrolyte impregnated in the electrode group and including a nonaqueous solvent and a lithium salt dissolved in the nonaqueous solvent, and a jacket for housing the electrode group and having a thickness of 0.3 mm or less, wherein the nonaqueous solvent γ-butyrolactone in an amount larger than 50% by volume and not larger than 95% by volume based on the total amount of the nonaqueous solvent.

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Patent Owner(s)

Patent OwnerAddress
KABUSHIKI KAISHA TOSHIBA1-1 SHIBAURA 1-CHOME MINATO-KU TOKYO 1050023 JAPAN

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hasebe, Hiroyuki Chigasaki, JP 57 613
Kanda, Motoya Yokohama, JP 43 1014
Ohsaki, Takahisa Yokohama, JP 28 695
Takami, Norio Yokohama, JP 499 5537

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