CHARGE-DISCHARGE MECHANISM OF GRAPHITIZED MESOCARBON MICROBEADS

The charge-discharge reaction mechanism of the graphitized mesocarbon microbead (MCMB) anode was investigated with cyclic voltammetry and x- ray diffractometry. It is concluded that the charge-discharge reaction of graphitized MCMB involves intercalation of lithium, which is essen tially similar to that for graphite. However, the in-plane ordering of the stage 1 and 2 Li-GICs obtained from the graphitized MCMB is not L iC6 like graphite, but is close to LiC8, according to the results of b oth x-raji diffractometry and cyclic voltammetry.