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Graphene‐Based Sulfur Composites for Energy Storage and Conversion in Li‐S Batteries
Author(s) -
Gu Xingxing,
Zhang Shanqing,
Hou Yanglong
Publication year - 2016
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.201500675
Subject(s) - graphene , energy storage , sulfur , nanotechnology , flexibility (engineering) , chemistry , electrochemistry , lithium (medication) , materials science , electrode , organic chemistry , medicine , power (physics) , physics , statistics , mathematics , quantum mechanics , endocrinology
There are growing research interests in developing high‐performance energy storage systems to meet the demands for large‐scale and sustainable energy storage. The lithium‐sulfur (Li‐S) batteries have drawn numerous attentions due to their exceptionally high energy density compared with other batteries. However, achieving the high capacities with long‐term cycle stability and retaining an essentially high sulfur loading remains a tremendous challenge for the designs of Li‐S batteries. Graphene is regarded as a very suitable and promising addition to the compositions for Li‐S batteries due to its unique two dimensional (2D) structure, high conductivity and superior mechanical flexibility. Besides, the functional groups of graphene surface can be tuned flexibly to immobilize the S/Li 2 S x on the graphene surface during the cycling process. In this review, the development of graphene‐sulfur composites and their applications in Li‐S batteries are discussed. The attempts are also devoted to the synthesis approaches of various graphene‐based sulfur composites, the graphene‐sulfur interaction and the impacts on the electrochemical performances as well as the major issues of Li‐S batteries.