锂硫电池硫基碳正极材料的研究进展

doi:10.16085/j.issn.1000-6613.2017-0701

摘要/Abstract

摘要： 用于锂硫电池的碳质材料具有优异的力学、电学、导热性能，可调的孔结构以及丰富的表面特性，能有效地限制多硫化物的溶解，改善锂硫电池的电化学性能。因此，本文分别从一维碳、二维碳和三维碳这3个方面综述了锂硫电池硫基碳复合正极材料的研究进展，探讨了改性硫基碳正极材料的制备方法和结构设计。分析表明，高比表面积和高孔容积的多孔纳米碳材料对提高锂硫电池电化学性能而言至关重要，并提出用金属硫化物掺杂的有序介孔碳复合材料作为锂硫电池的正极材料能促进锂离子在正负极间的迁移，提高锂硫电池的循环稳定性和活性物质利用率。

关键词: 锂硫电池, 复合材料, 多孔介质, 电化学, 稳定性

Abstract: The carbonaceous material used in lithium-sulfur batteries has excellent mechanical,electrical,thermal conductivity,adjustable pore structure,and rich surface properties,can effectively limit the dissolution of polysulfides to improve the electrochemical performance of lithium-sulfur batteries.In this paper,the research progress of sulfur-sulfur carbon-based composite cathode materials is reviewed from three aspects:one-dimensional carbon,two-dimensional carbon and three-dimensional carbon.The preparation method and structure design of modified sulfur-based carbon cathode materials are discussed.The results show that the porous nano-carbon with high specific surface area and high pore volume is very important to improve the electrochemical performance of lithium-sulfur battery,and the ordered mesoporous carbon composites doped with metal sulfide are proposed as lithium-sulfur.The cathode material can promote the migration of lithium ions between positive and negative electrodes,improve the cycle stability of lithium-sulfur batteries and active material utilization.

Key words: lithium-sulfur battery, composites, porous media, electrochemistry, stability

中图分类号:

TM912.9

杨果, 马壮, 杨绍斌, 沈丁. 锂硫电池硫基碳正极材料的研究进展[J]. 化工进展, 2017, 36(S1): 311-318.

YANG Guo, MA Zhuang, YANG Shaobin, SHEN Ding. Research progress of sulfur-based carbon cathode materials in lithium-sulfur batteries[J]. Chemical Industry and Engineering Progress, 2017, 36(S1): 311-318.

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