Porous carbon-sulfur composite cathode for lithium/sulfur cells
By Rao, Mumin; Li, Weishan & Cairns, Elton J.
Published in Electrochemistry Communications
2012
Abstract
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.