锂硫二次电池硫基正极材料的研究进展

Research Progress of Sulfur-based Anode Material in Lithium-sulfur Batteries

  • 摘要: 作为新一代的储能体系,锂硫二次电池以高的理论能量密度(2 600 m Ah/g),廉价的正极材料以及环境友好等特点受到广泛的关注。但是,由于硫的绝缘性和充放电过程中体积的膨胀、锂硫之间复杂的电化学反应及其产物多硫化物的溶解性等诸多问题的存在,阻碍了锂硫二次电池走向商业化。本文从无机金属化合物与硫复合、导电高分子与硫复合、纳米碳及其衍生物与硫复合,以及三元复合等方面出发,综述了近年来锂硫电池正极材料的研究现状,并展望了该材料的未来发展趋势。

     

    Abstract: As a energy storage system of the new generation,the Li-S battery is gaining increasing interest due to its high capacity and energy density(2 600 m Ah/g),cheap anode material and friendly environment,etc. However,such problems as the insulation of sulfur,the volume expansion of sulfur in the process of charging and discharging,complex electro-chemical reaction between lithium and sulfur and the dissolution of sulfides slow down the commercialization of the sulfur lithium secondary battery. In this paper,from the aspects of inorganic materials,conductive polymers,nanomaterials and nano-derivatives and ternary compounds,the recent progress Li-S battery technology was reviewed,and then the future development of this kind of material was prospected.

     

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