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DOI: 10.1002/ (adfm.201707520) Article type: (Review) Advances in Polar Materials for Lithium-Sulfur Batteries Hongqiang Wanga,b,c , Wenchao Zhangb, Jianzhong Xua, Zaiping Guob* Dr. H. Q. Wang, Prof. J. Z. Xu, College of Chemistry & Environmental Science, Hebei University, Baoding, Hebei, 071002, PR China Dr. H. Q. Wang, W. C. Zhang, Prof. Z.P. Guo, Institute for Superconducting & Electronic Materials, School of Mechanical, Materials and Mechatronics Engineering, University of Wollongong, Wollongong, NSW 2522, Australia E-mail: zguo@uow.edu.au Dr. H. Q. Wang Fengfan Company Limited, Baoding, Hebei, 071057, PR China Keywords: lithium-sulfur batteries; polar inorganics; polar organics; chemical interaction. Abstract Lithium-sulfur batteries are regarded as promising candidates for energy storage devices due to their high theoretical energy density. Various approaches have been proposed to break through the obstacles that are preventing Li-S batteries from realizing practical application. Recently, the importance of the strong chemical interaction between polar materials and polysulfides has been recognized by researchers to improve the performance of Li-S batteries, especially with respect to the shuttle effect. Polar materials, unlike nonpolar materials, exhibit strong interactions with polysulfides without any modification or doping because of their intrinsic polarity, absorbing the polar polysulfides and thus suppressing the notorious shuttle effect. The recent advances on polar materials for Li-S batteries are reviewed here, especially the chemical polar-polar interaction effects towards immobilizing dissolved polysulfides, and the relationship between the intrinsic properties of the polar materials and the electrochemical performance of the Li-S batteries are discussed. Polar materials, including polar inorganics in the cathode and polar organics as binder for Li-S 1PDF Image | Advances in Polar Materials for Lithium-Sulfur Batteries
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