锂硫电池正极用硫/介孔碳复合材料的制备及电化学性能

徐晶晶 李彬 李松梅 刘建华 于美

引用本文: 徐晶晶, 李彬, 李松梅, 刘建华, 于美. 锂硫电池正极用硫/介孔碳复合材料的制备及电化学性能[J]. 无机化学学报, 2015, 31(10): 2030-2036. doi: 10.11862/CJIC.2015.267 shu
Citation:  XU Jing-Jing, LI Bin LI, LIU Jian-Hua, YU Mei. Preparation and Electrochemical Performance of Sulfur/Mesoporous Carbon Composites as Cathodes for Lithium-Sulfur Batteries[J]. Chinese Journal of Inorganic Chemistry, 2015, 31(10): 2030-2036. doi: 10.11862/CJIC.2015.267 shu

锂硫电池正极用硫/介孔碳复合材料的制备及电化学性能

    通讯作者: 李松梅,E-mail:songmei_li@buaa.edu.cn
  • 基金项目:

    国家自然科学基金(No.51271012)资助项目。 (No.51271012)

摘要: 制备了以十二烷基硫酸钠(SDS)为模板的介孔碳,并将介孔碳和单质硫采用熔融渗透法复合制得硫/介孔碳复合材料。SEM、TEM和BET结果显示介孔碳成直径约为500 nm的大小均一的球体,存在孔径为2 nm的微孔;单质硫充分填充在介孔碳的微孔中。以硫/介孔碳复合物作为锂硫电池正极材料时显示出高的电化学性能。初始放电容量高达1519 mAh·g-1,在200 mA·g-1的电流密度下充放电200个循环后依然能保持在835 mAh·g-1。硫/介孔碳复合材料的高倍率性能和优异的循环稳定性,源于介孔碳良好的导电性及其孔结构的固硫作用。

English

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  • 收稿日期:  2015-04-16
  • 网络出版日期:  2015-06-24
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