A MODIFICATION IN THE PREPARATION PROCESS OF A CARBON WHISKER FOR THEANODE PERFORMANCE OF LITHIUM RECHARGEABLE BATTERIES

In general, a carbon whisker is prepared from hydrocarbons using a vap or-grown method and chopped to a suitable length. Two procedures were examined to prepare the whiskers: in the normal procedure (1A), whiske rs were graphitized after the chopping process, and in the other proce ss (2A), they were chopped after the graphitization. The carbon whiske r of 2 mu m in length by the 1A procedure (2GWH-1A) showed an average capacity of 248 mAh g(-1). On the other hand, the whisker of the same diameter by the 2A process (2GWH-2A) showed a much higher capacity of 363 mAh g(-1): this value is 1.6 times of that of 2GWH-1A. This modifi cation method may open a new probability to higher performance carbon materials for the anode.