A sulfur-microporous carbon composite positive electrode for lithium/sulfur and silicon/sulfur rechargeble batteries

作者：Takahashi Takuya; Yamagata Masaki; Ishikawa Masashi^*

来源：Progress in Natural Science, 2015, 25(6): 612-621.

DOI：10.1016/j.pnsc.2015.11.011

• Sulfur
• Micropore
• Ionic liquid
• Silicon
• Lithium-ion battery

Sulfur is an advantageous material as a promising next-generation positive electrode material for high-energy lithium batteries due to a high theoretical capacity of 1672 mA h g(-1) although its discharge potential is somewhat modest: ca. 2 V vs Li/Li+. However, a sulfur positive electrode has some crucial problems for practical use, which are mainly attributed to the dissolution of its intermediate products in charge-discharge processes. In order to resolve the dissolution problem of lithium polysulfide, we attempted to synthesize a sulfur-microporous activated carbon (AC) composite positive electrode. Moreover, we have systematically researched the battery performance of sulfur-microporous AC positive electrode with variations of electrolytes as well as negative electrodes, and found its promising positive electrode performance for a next generation rechargeable battery.

• 出版日期2015-12