SYNTHESIS AND ELECTROCHEMICAL PERFORMANCE OF SULFUR/ HIERARCHICALLY POROUS CARBON COMPOSITES
The lithium sulfur batteries have increasing attention due to their higher theoretical specific capacity of 1672 mAh g‐1 against lithium, which is almost ten times greater than that of commercially used transition-metal phosphates and oxides. The element sulfur, as the active mass of the cathode of the lithium sulfur battery, has many valuable characteristics, such as low equivalent weight, extremely low cost, and nontoxicity. However, it has been difficult to develop a practical Li-S battery because of the highly insulating nature of sulfur (5× 10‐30 S cm‐1 at 25 °C) and the high solubility of lithium polysulfides as intermediate products generated during the charge and discharge process. These problems cause poor cycle ability and low utilization efficiency of the active mass.
The lithium sulfur battery Polysulfide Special capacity hierarchically porous carbon Sulfur utilization
Meiri Wang Huamin Zhang Yining Zhang Hexiang Zhong Qian Wang Chao Qu
Energy Storage Division, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
国际会议
大连
英文
29-30
2012-05-28（万方平台首次上网日期，不代表论文的发表时间）