CARBON MATERIAL FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND METHOD FOR MANUFACTURING SAME, AND NEGATIVE ELECTRODE USING CARBON MATERIAL AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY
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United States of America Patent
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Jan 18, 2017
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Aug 30, 2012
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The object of the present invention is to provide a carbonaceous material which is obtainable from plant-derived char and has a decreased specific surface area. Further, the object of the present invention is to provide a non-aqueous electrolyte secondary battery having excellent dedoping capacity, non-dedoping capacity, and charge-discharge efficiency. The object can be solved by a carbonaceous material for non-aqueous electrolyte secondary batteries characterized in that the carbonaceous material is obtained by heat-treating plant-derived char which is demineralized in gas-phase, and carbon precursor or volatile organic compound under a non-oxidizing gas atmosphere; and a specific surface area determined by a BET method is 10 m2/g or less.
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