Zhang Bo-Wen, Sun Bo, Fu Pei, Liu Feng, Zhu Chen, Xu Bao-Ming, Pan Yong, Chen Chi
Hubei Provincial Key Laboratory of Green Materials for Light Industry, Hubei University of Technology, Wuhan 430068, China.
Shandong Zhongsheng Pharmaceutical Equipment Co., Ltd., Yantai 264010, China.
Membranes (Basel). 2022 Aug 17;12(8):790. doi: 10.3390/membranes12080790.
Lithium-sulfur batteries with high theoretical specific capacity and high energy density are considered to be one of the most promising energy storage devices. However, the "shuttle effect" caused by the soluble polysulphide intermediates migrating back and forth between the positive and negative electrodes significantly reduces the active substance content of the battery and hinders the commercial applications of lithium-sulfur batteries. The separator being far from the electrochemical reaction interface and in close contact with the electrode poses an important barrier to polysulfide shuttle. Therefore, the electrochemical performance including coulombic efficiency and cycle stability of lithium-sulfur batteries can be effectively improved by rationally designing the separator. In this paper, the research progress of the modification of lithium-sulfur battery separators is reviewed from the perspectives of adsorption effect, electrostatic effect, and steric hindrance effect, and a novel modification of the lithium-sulfur battery separator is prospected.
具有高理论比容量和高能量密度的锂硫电池被认为是最有前途的储能装置之一。然而，可溶性多硫化物中间体在正负极之间来回迁移所引起的“穿梭效应”显著降低了电池的活性物质含量，并阻碍了锂硫电池的商业应用。隔膜远离电化学反应界面且与电极紧密接触，这对多硫化物穿梭构成了重要障碍。因此，通过合理设计隔膜可以有效提高锂硫电池的电化学性能，包括库仑效率和循环稳定性。本文从吸附效应、静电效应和空间位阻效应的角度综述了锂硫电池隔膜改性的研究进展，并对锂硫电池隔膜的新型改性进行了展望。
