(太原科技大学 材料科学与工程学院，太原 030024)
摘 要: 锂硫电池(LSB)具有很高的理论比容量和能量密度，并且成本低廉、对环境友好，在未来很可能是代替锂离子电池的选择之一，有着良好的前景和发展空间。然而其正极的硫单质几乎不导电，需要引入导电性好的基体材料来改善正极的导电性。金属硫化物因其亲硫性、较低的锂化电位以及比金属氧化物更好的导电性被大量的用作硫的基体材料。本文分别从单金属硫化物、二元及三元金属硫化物以及金属硫化物与其他金属化合物形成的异质结构的角度进行分类，综述了近两年金属硫化物在锂硫电池正极材料中的应用进展。
关键字: 锂硫电池；正极；金属硫化物；多硫化物
（School of Materials Science and Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, China）
Abstract:With high theoretical capacity and energy density, low cost and environmental friendliness, lithium-sulfur batteries (LSBs) are likely to be one of the options to replace lithium-ion batteries in the future. It has a favorable foreground and development opportunities. However, the sulfur of the cathode is almost non-conductive, and a base material with high electrical conductivity needs to be introduced to improve the electrical conductivity of the cathode. Metal sulfides are used in large quantities as sulfur matrix materials due to their sulphophile affinity, lower lithiation potential, and better electrical conductivity than metal oxides. In this review, we have classified single-metal sulfides, binary and ternary metal sulfides, and heterostructures formed by metal sulfides and other metal compounds, respectively. The application progress of metal sulfides for Li-S batteries cathode in the recent two years was reviewed.
Key words: lithium-sulfur batteries; cathode; metal sulfides; polysulfides
