Electricity storage device

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United States of America Patent

PATENT NO 11551878
APP PUB NO 20180301290A1
SERIAL NO

15574022

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Abstract

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An electricity storage device includes a negative electrode having a layered structure that includes an organic backbone layer containing an aromatic compound having an aromatic ring structure, the aromatic compound being in the form of dicarboxylate anions, and an alkali metal element layer containing an alkali metal element coordinated with oxygen in the dicarboxylate anions to form a backbone, a positive electrode that provides electric double-layer capacity, and a nonaqueous electrolyte solution provided between the negative electrode and the positive electrode, the nonaqueous electrolyte solution containing an alkali metal salt. The layered structure may be provided in layers by a π-electron interaction of the aromatic compound and may have a monoclinic crystal structure belonging to the space group P21/c. The positive electrode may contain activated carbon having a specific surface area of 1,000 m2/g or more.

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Patent Owner(s)

  • KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ogihara, Nobuhiro Nagakute, JP 19 55

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