锂硫电池隔膜改性研究进展

锂硫电池因高比容量和高能量密度引起了研究者们的广泛关注,成为新型锂电池研究热点之一。隔膜作为锂硫电池的重要组成部分,是提高电池各方面性能的关键。现阶段锂硫电池隔膜改性工作主要集中于高性能涂层材料的设计与合成以及新型隔膜材料的开发。本文综述了锂硫电池隔膜改性的研究现状,分别从碳涂层隔膜、元素掺杂碳涂层隔膜、金属氧化物/碳复合涂层隔膜、新型薄膜材料和多层隔膜等五个方面进行介绍,指出了从隔膜入手提高导电性、抑制穿梭效应、减轻锂电极腐蚀,从而提高电池电化学性能的重要性。

Latest Research Progress of Modifying the Separators Used forLithium-Sulfur Batteries

Lithium sulfur battery with its high theoretical specific capacity and specific energy has provoke intensive attention, and becomes one of the research hotspots.As one of the essential ingredients for lithium-sulfur batteries,separator is the crucial fac-tor for the performance promotion.At present,the research of modifying separator mainly focus on the design and synthesis of high performance coating materials as well as the exploitation of new separator materials.The present paper elaborates the latest research progress of modifying separator for lithium-sulfur batteries is introduced from five aspects:carbon coating separator,element-doped carbon coating separator,metal oxide/carbon composite coating separator,new membrane materials and multilayer separator.It also suggests the significance of separator modification for raising conductivity,inhibiting shuttle effect and mitigating corrosion of lit-hium electrode,and moreover,for improving the electrochemical properties of Li-S cells.