(太原科技大學(xué) 材料科學(xué)與工程學(xué)院，太原 030024)
摘 要: 鋰硫電池(LSB)具有很高的理論比容量和能量密度，并且成本低廉、對環(huán)境友好，在未來很可能是代替鋰離子電池的選擇之一，有著良好的前景和發(fā)展空間。然而其正極的硫單質(zhì)幾乎不導(dǎo)電，需要引入導(dǎo)電性好的基體材料來改善正極的導(dǎo)電性。金屬硫化物因其親硫性、較低的鋰化電位以及比金屬氧化物更好的導(dǎo)電性被大量的用作硫的基體材料。本文分別從單金屬硫化物、二元及三元金屬硫化物以及金屬硫化物與其他金屬化合物形成的異質(zhì)結(jié)構(gòu)的角度進(jìn)行分類，綜述了近兩年金屬硫化物在鋰硫電池正極材料中的應(yīng)用進(jìn)展。
關(guān)鍵字: 鋰硫電池；正極；金屬硫化物；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
