The addition of nano material to the sulfur electrode for lithium/ sulfur battery

摘要

The lithium/sulfur cell was an extremely attractive redox couple because of high theoretical specific energy of 2600Wh/kg(1672mAh/g-sulfur), assuming complete reaction to the Li-2S. However, it was very difficult to make a high utilization Li/S cell because of high resistivity and reactivity of sulfur.[1,2] Recently, some researchers overcame the problem of the insulating character of elemental sulfur in composite cathode by homogeneous mixing of an electronically conductive material such as carbon black powder.[3,4]