多硫化物
分离器(采油)
阳极
材料科学
催化作用
化学工程
吸附
无机化学
电极
氮气
兴奋剂
硫黄
化学
有机化学
物理化学
电解质
冶金
热力学
物理
工程类
光电子学
作者
Xiufeng Shi,Min Liu,Tingyue Gu,Jung Han,Rui-Peng Ren,Yongkang Lv,Jing Ren
标识
DOI:10.1016/j.jallcom.2023.170938
摘要
Due to the conversion reaction mechanism of MoS2 anode in lithium-ion batteries (LIBs), which inevitably leads to the formation of lithium polysulfide (LiPSs). Consequently, one of the major limitations associated with using MoS2 anode is the dissolution of LiPSs and sluggish conversion kinetics of LiPSs to insoluble Li2S2/Li2S. Inspired by the research on lithium-sulfur batteries, we believe that electrocatalysts can effectively solve the above issues. Herein, we have prepared the iron single atoms-nitrogen doped carbon (Fe SAs-NC) catalyst by the metal-organic framework (MOF)-derived strategy and employed it to modify the commercial polypropylene (PP) separator. In LIB containing MoS2 electrodes, the Fe SAs-NC/PP separator provides enhanced reversibility and stable cycling properties compared to the unmodified PP separator. The visual adsorption experiment and symmetrical battery results confirm that the Fe SAs-NC can adsorb the soluble LiPSs and catalyze the slow conversion reaction.
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