%0 Journal Article
%A Liwen Ji
%A Mumin Rao
%A Haimei Zheng
%A Liang Zhang
%A Yuanchang Li
%A Wenhui Duan
%A Jinghua Guo
%A Elton J Cairns
%A Yuegang Zhang
%B Journal of the American Chemical Society
%D 2011
%G eng
%N 46
%P 18522-18525
%R 10.1021/ja206955k
%T Graphene oxide as a sulfur immobilizer in high performance lithium/sulfur cells
%V 133
%8 10/2011
%! J. Am. Chem. Soc.
%X <p>The loss of sulfur cathode material as a result of polysulfide dissolution causes significant capacity fading in rechargeable lithium/sulfur cells. Here, we use a chemical approach to immobilize sulfur and lithium polysulfides via the reactive functional groups on graphene oxide. This approach enabled us to obtain a uniform and thin (around tens of nanometers) sulfur coating on graphene oxide sheets by a simple chemical reaction–deposition strategy and a subsequent low-temperature thermal treatment process. Strong interaction between graphene oxide and sulfur or polysulfides enabled us to demonstrate lithium/sulfur cells with a high reversible capacity of 950–1400 mA h g<sup>–1</sup>, and stable cycling for more than 50 deep cycles at 0.1C (1C = 1675 mA g<sup>–1</sup>).</p>