Negative electrode for lithium-ion secondary cell and method for manufacturing same

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United States of America Patent

PATENT NO 9520595
APP PUB NO 20150311526A1
SERIAL NO

14439063

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Abstract

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A negative electrode for a lithium-ion secondary cell is configured in a novel manner, having a charge-discharge capacity, as determined per unit weight of the carbon used in the electrode, that is markedly higher than the theoretical capacity of graphite, and having a surface that is stabilized against repeated charging and discharging. A negative electrode for a lithium-ion secondary cell in which a carbon layer obtained by building up and growing a graphene sheet is formed on the surface of a substrate comprising an iron-based metal, the carbon layer being formed in a diagonal direction in relation to the substrate, and the carbon layer being used as the surface of the negative electrode. As measured using an argon laser having a wavelength of 532 nm, the Raman spectrum of the graphite that constitutes the carbon nanochip layer has a g/d ratio of 0.30-0.80.

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Patent Owner(s)

Patent OwnerAddress
SANGO CO LTDJAPAN
CITY OF NAGOYAJAPAN

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Daifuku, Makoto Nishikamo-gun, JP 3 27
Izuhara, Kouichi Nishikamo-gun, JP 3 27
Miyata, Yasushi Nagoya, JP 16 194

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