Lithium-ion-storage behaviours of CoSb_3 intermetallic compound and effects of some carbonaceous additives

摘要

Intermetallic compound CoSb 3 powders were prepared by vacuum melting and ball milling. It is found that the reversible capacity of the CoSb 3 electrode is about 470?mA·h/g at the first cycle with the potential plateaus from 0.8?V to 1.0?V against the pure lithium electrode. 10% mesocarbon microbead (MCMB) (mass fraction) additives can improve both capacity and cycling life of CoSb 3, while the effect of carbon nanotube (CNT) additives is not visible.