Negative electrode active material for lithium ion rechargeable battery and negative electrode using the same

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United States of America Patent

PATENT NO 8728668
APP PUB NO 20100297500A1
SERIAL NO

12227945

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Abstract

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A negative electrode active material for a lithium ion rechargeable battery having high electrode density, excellent in permeability of an electrolyte, less in capacity loss due to charging/discharging, and excellent in cycle performance is provided at a low cost. The negative electrode active material is a mixture of three kinds of graphite powders having different hardnesses and shapes from one another, with a binder added thereto and is coated onto a metallic current collector to be dried and pressed, thereby rendering an electrode density not lower than 1.7 g/cm3.

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Patent Owner(s)

Patent OwnerAddress
NIPPON CARBON CO LTDTOKYO 104-0031

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hongawa, Kenichi Shiga, JP 1 22
Kawai, Takanobu Shiga, JP 6 65
Matsumoto, Hayato Shiga, JP 24 119

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