单质硫/乙炔黑复合材料的制备与性能

Preparing and performance of element sulfur/acetylene black composite

通过加热处理单质硫和乙炔黑（AB）的混合物,制得硫含量为75%的S/AB复合材料。用XRD、SEM、循环伏安和恒流充放电测试,分析复合材料的结构和电化学性能。制备的S/AB复合材料的容量较高、循环性能较好,以0.2 C在1.7-2.5 V充放电,复合材料中硫的首次放电比容量为1 257 m Ah/g,在室温下第80次循环的放电比容量为835 m Ah/g。

Sulfur（ S）/acetylene black（AB） composite with sulfur content of 75% was prepared via thermally heating element sulfur and acetylene black. The structure and electrochemical performance of composite were investigated by XRD, SEM, cyclic voltammetry and galvanostatic charge-discharge tests. The prepared S/AB composite had high capacity and fine cycle performance. When cycled with O. 2 C in 1.7 - 2. 5 V, the initial specific discharge capacity of sulfur in the composite was 1 257 mAh/g, the specific discharge capacity was 835 mAh/g in the 80th cycle under room temperature.