Porous carbon-sulfur composite cathode for lithium/sulfur cells

被引:96
作者
Rao, Mumin [1 ,2 ,3 ]
Li, Weishan [2 ]
Cairns, Elton J. [1 ,3 ]
机构
[1] Univ Calif Berkeley, Dept Chem & Biomol Engn, Berkeley, CA 94720 USA
[2] S China Univ Technol, Coll Mat Sci & Engn, Guangzhou 510641, Guangdong, Peoples R China
[3] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Environm Energy Technol Div, Berkeley, CA 94720 USA
关键词
Porous carbon; Sulfur composite; Cathode; Lithium/sulfur cell; BATTERIES; ELECTROLYTE; PERFORMANCE;
D O I
10.1016/j.elecom.2011.12.022
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
A unique porous carbon was prepared using a polymer mixture of polyacrylonitrile and poly(methylmethacrylate). Sulfur was incorporated into this porous carbon via a new simple solution chemical deposition method. This novel porous carbon-sulfur composite showed high reversible capacity, good capacity retention and good rate capability when used as the cathode in rechargeable Li/S cells. The electrochemical results show that porous carbon-sulfur composite with 53.7 wt.% S maintains a stable discharge capacity of more than 740 mA h g(-1)-sulfur after 100 cycles. (c) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码:1 / 5
页数:5
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