公开(公告)号：US11345601B2

公开(公告)日：2022-05-31

申请号：US16322240

申请日：2017-08-02

Applicant: KURARAY CO., LTD.

Inventor： Takafumi Izawa ,  Keiichi Nishimura ,  Taketoshi Okuno ,  Hideharu Iwasaki

IPC: C01B32/318 ,  H01M4/587 ,  C01B32/336 ,  C01B32/30 ,  H01M4/04 ,  H01M4/02

Abstract: The present invention relates to a carbonaceous material that is suitable for the negative pole active substance of a nonaqueous electrolyte secondary battery, a negative pole for a nonaqueous electrolyte secondary battery comprising the carbonaceous material, a nonaqueous electrolyte secondary battery having the negative pole, and a method for producing the carbonaceous material. This carbonaceous material is for a negative pole active substance of a nonaqueous electrolyte secondary battery. The carbonaceous material is derived from plants, the half-width of the peak at approximately 1360 cm-1 of the Raman spectrum observed by laser Raman spectroscopy is 190 to 240 cm-1, and the specific surface area as found by multipoint BET analysis of nitrogen adsorption is 10 to 100 m2/g.