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秦海超,燕映霖,杨蓉,李巧乐,王岩,陈利萍.高性能锂硫电池正极复合材料研究现状[J].电源学报,2018,16(6):179-185
高性能锂硫电池正极复合材料研究现状
Research Status of Cathode Composite Materials for High-performance Lithium-sulfur Batteries
投稿时间:2016-09-28  修订日期:2018-07-06
DOI:10.13234/j.issn.2095-2805.2018.6.179
中文关键词:  锂硫电池  正极材料  复合材料  微观结构
英文关键词:lithium-sulfur battery  cathode material  composite material  microstructure
基金项目:国家国际科技合作专项资助项目(2015DFR50350);陕西省教育厅自然科学专项资助项目(15JK1536,15JK1538)
作者单位E-mail
秦海超 西安理工大学材料科学与工程学院, 西安 710048  
燕映霖 西安理工大学材料科学与工程学院, 西安 710048 yyl3550@xaut.edu.cn 
杨蓉 西安理工大学理学院化学电源研究所, 西安 710048  
李巧乐 西安理工大学材料科学与工程学院, 西安 710048  
王岩 西安理工大学材料科学与工程学院, 西安 710048  
陈利萍 西安理工大学材料科学与工程学院, 西安 710048  
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中文摘要:
      锂硫电池具有理论比容量高(1 675 mA·h/g)、硫资源丰富、环境友好无毒和价格低廉等优点,是下一代二次电池的研究重点。单质硫作为锂硫电池正极材料时,其导电性差、中间产物溶解及放电过程体积膨胀导致的电化学性能衰减,严重制约着锂硫电池的商品化。对单质硫进行复合是目前主要的改性方法和研究热点。综述了吸附型、包覆型和多元复合型等多种硫基正极复合材料的研究现状,分析了复合材料微观结构对其电化学性能的影响,并展望了硫基正极复合材料及锂硫电池的发展前景。
英文摘要:
      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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