Nonaqueous secondary battery and a method of manufacturing a negative electrode active material
AssigneeSharp Kabushiki Kaisha
InventorsNaoto Nishimura, Kazuo Yamada, Yoshihiro Tsukuda, Takehito Mitate, Kazuaki Minato
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Abstract
A nonaqueous secondary battery comprising a negative electrode, a positive electrode in which a chalcogenated substance containing lithium is used as a positive electrode active material and a nonaqueous ion conductor, said negative electrode containing a negative electrode active material which is a carbon material where an amorphous carbon is adhered on the surface of graphite particles which are subjected to an oxidizing treatment.
Claims22
A nonaqueous secondary battery comprising a negative electrode, a positive electrode in which a chalcogenated substance containing lithium is used as a positive electrode active material and a nonaqueous ion conductor, said negative electrode containing a negative electrode active material which is a carbon material where an amorphous carbon is adhered on the surface of oxidized graphite particles.
A method of manufacturing a negative electrode active material comprising the steps of oxidizing graphite particles and adhering amorphous carbon on the surface of the graphite particles to form a negative electrode active material.
Dependencies are inferred from the claim text.