锂硫电池正极材料研究进展

锂硫电池是一类极具发展前景的高容量储能体系，将是下一代电动汽车以及混合电动汽车的化学能源。通过十余年的研究和开发，虽然对其电化学过程中复杂反应机理还没有完整系统的理论描述，但是围绕锂硫电池的研究取得了很多成果。回顾了过去十余年在锂硫电池正极材料领域取得的研究成果，介绍了锂硫电池正极材料的研究现状，分析了该体系的缺陷和存在的问题，并展望了今后锂硫电池的研究方向。

Research process of lithium-sulfur batteries

Lithium-sulfur battery is a high capacity energy storage system with bright future,and it is considered as the next generation portable energy supply device for electric vehicle（EV）and hybrid electric vehicle（HEV）.Through decades of research and development,people understand the system stepwisely.The electrochemistry mechanism of sulfur cathode is very complex and hard to examine,which is the key point to develop lithium-sulfur battery.Although there are many unknown mechanism in the electrochemical process of charge/discharge of the lithium sul-fur battery,some achievements have been made on the development of cathode materials which provide various sources to study.The achievements on lithium sulfur battery in the past decade from the respects of lithium sulfur battery system and cathode materials are reviewed in this pa-per.The weaknesses are revealed and the future is prospected.