Elektrodenmaterial aus Kohlenstoff für nichtwässrige Sekundärbatterie, Verfahren zu seiner Herstellung und dieses Kohlenstoffmaterial enthaltene nichtwässrige Sekundärbatterie

摘要

A carbonaceous negative electrode material for nonaqueous secondary batteries having (i) not less than 2 x 10<-4> cc/g of pores having a diameter of smaller than 8 A and (ii) not more than 15 x 10<-4> cc/g of pores having a diameter of 8 to 18 A. The material exhibits a high capacity and a high efficiency and is particularly useful for lithium ion secondary batteries.