锂硫电池隔膜修饰材料的研究进展

Research progress of separator modification materials for lithium-sulfur batteries

锂硫电池(LSBs)是一种高理论能量密度(2600 Wh·kg^(-1))的储能器件,但反应迟滞以及多硫化锂(LiPS)的穿梭等问题严重限制了LSBs的发展。目前广泛认为,隔膜修饰层的功能化改性可以显著地提升LSBs的电化学特性。因此,主要综述了近年来LSBs隔膜修饰材料的最新进展,分别总结了金属类材料、框架材料、聚合物材料以及预锂化材料等隔膜修饰材料的作用机理及其LSBs实操储能性能,并讨论了理想的隔膜修饰材料,旨在为未来LSBs实际应用材料的开发利用提供有益的参考。

Lithium-sulfur batteries(LSBs)are energy storage devices with high theoretical energy density(2600 Wh·kg^(-1)).However,the development of LSBs is seriously limited by the sluggish reaction and lithium polysulfide(LiPS)shuttle.Nowadays,it is widely believed that the functional modification of the separator modification layer could significantly improve the electrochemical properties of LSBs.There-fore,this paper mainly reviews the latest progress of LSBs separator modification materials in recent years,summarizes the mechanism of metal materials,frame materials,polymer materials and pre-lithia-tion materials and their LSBs operational energy storage performance.The ideal separator modification materials are discussed,aiming to provide a useful reference for the development of LSBs practical appli-cation materials in the future.