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QIN Haichao,YAN Yinglin,YANG Rong,LI Qiaole,WANG Yan,CHEN Liping.Research Status of Cathode Composite Materials for High-performance Lithium-sulfur Batteries[J].JOURNAL OF POWER SUPPLY,2018,16(6):179-185
Research Status of Cathode Composite Materials for High-performance Lithium-sulfur Batteries
Received:September 28, 2016  Revised:July 06, 2018
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DOI:10.13234/j.issn.2095-2805.2018.6.179
Keywords:lithium-sulfur battery  cathode material  composite material  microstructure
Fund Project:Project Supported by the International Science and Technology Cooperation Program of China (No. 2015DFR50350); Project Supported by the Scientific Research Program of Shaanxi Provincial Education Department (Nos. 15JK1536, 15JK1538)
                 
AuthorInstitutionEmail
QIN Haichao School of Materials Science and Engineering, Xi'an University of Technology, Xi'an , China
YAN Yinglin School of Materials Science and Engineering, Xi'an University of Technology, Xi'an , China yyl3550@xaut.edu.cn
YANG Rong Institute of Chemical Power Sources, School of Sciences, Xi'an University of Technology, Xi'an , China
LI Qiaole School of Materials Science and Engineering, Xi'an University of Technology, Xi'an , China
WANG Yan School of Materials Science and Engineering, Xi'an University of Technology, Xi'an , China
CHEN Liping School of Materials Science and Engineering, Xi'an University of Technology, Xi'an , China
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Abstract:
      Lithium-sulfur(Li-S) batteries have many advantages, such as higher theoretical capacity(1 675 mAh/g), abundant sources of S, environmental friendliness and nontoxicity, as well as low cost. Therefore, they have become a research focus of rechargeable battery in the next generation. When elemental sulfur is used as cathode material for Li-S batteries, it has several disadvantages, including poor electrical conductivity, dissolution of mid-product, and deterioration of electrochemical performance due to volume expansion during discharging, which seriously restrict the commercialization of Li-S batteries. At present, sulfur-based composite is one of the main modification methods and a hot research spot. In this paper, the research status of sulfur-based cathode composite materials was reviewed, including types of adsorption, coating, and multi-component; the effect of composite microstructure on the electrochemical performance was analyzed; moreover, the development outlook of the sulfur-based cathode composite materials and Li-S batteries was provided.
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