公开(公告)号：US20180029891A1

公开(公告)日：2018-02-01

申请号：US15552830

申请日：2016-02-16

Applicant: SHOWA DENKO K.K.

Inventor： Akihisa TONEGAWA ,  Daisuke KOHNO ,  Daisuke HARADA ,  Yasuaki WAKIZAKA

IPC: C01B32/205 ,  H01M10/0525 ,  H01M4/133 ,  H01M4/66 ,  H01M4/62 ,  H01M4/525 ,  H01M4/505 ,  H01M10/0569 ,  H01M4/583

Abstract: The present provides a carbon material containing 50 to 1,000 ppm by mass of vanadium (V), wherein a mean particle diameter D50 is 3 to 7 μm; a tapping density after 400 times of tapping is 0.40 to 1.00 g/cm3; a BET specific surface area is 4.0 to 12.0 m2/g; an R value (ID/IG) measured in the spectrum observed by Raman spectroscopy is 0.10 to 0.30; and an interplanar spacing d002 of plane (002) (nm) and Lc002 (nm) as being the size in the c-axis direction of the graphite crystals satisfy the relationship represented by the following formulae (1) and (2) 0.3362≦d002≦0.3370   (1) −23660×d002+8010≦Lc002≦−23660×d002+8025   (2); which is suitable for a non-aqueous electrolytic secondary battery having a low resistance and a high coulomb efficiency; a method for producing the same; a carbon material for a battery electrode; an electrode; and a lithium-ion secondary battery using the above-described carbon material.