A novel sulfur-impregnated porous carbon matrix as a cathode material for a lithium-sulfur battery

作者：Cui, Yanhui; Liang, Xiao; Ouyang, Jue; Huang, Jiayi; Zeng, Jiong; Wu, Junwei^*; Li, Zuohua; Du, Chenqiang; Li, Zhoufu; Baker, Andrew P.; Huang, Kevin; Zhang, Xinhe

来源：RSC Advances, 2016, 6(69): 64228-64233.

DOI：10.1039/c6ra09338h

• ELECTRODE MATERIALS
• GRAPHENE OXIDE
• NANOTUBES
• ION

A novel sulfur-impregnated porous carbonmatrix (PCM-Z-S) has been prepared as a cathode material for a lithium-sulfur battery. The porous carbon matrix (PCM-Z), which was obtained using de-waxed cotton and ZnCl2 as an activator, has a surface area of 1056 m(2) g(-1) and a pore volume of 1.75 cm(3) g(-1). The PCM-Z was mixed with sublimed sulfur and then heated in nitrogen gas to form a carbon-sulfur 58 wt% composite (PCM-Z-S) which has excellent electro-chemical proprieties. The PCM-Z-S delivers a capacity of 850 mAh g(-1) at 1C and retains 630mA h g(-1) after nearly 200 cycles which are values much higher than that of a carbon matrix prepared without ZnCl2. These results show the sulfur-impregnated porous carbon matrix (PCM-Z-S) has great potential as a cathode material in a lithium-sulfur battery.

• 出版日期2016
• 单位哈尔滨工业大学深圳研究生院; 天津大学