多硫化物
材料科学
催化作用
储能
纳米技术
有机自由基电池
锂(药物)
硫黄
电池(电)
电化学
电解质
电极
化学
有机化学
热力学
功率(物理)
物理化学
内分泌学
冶金
物理
医学
作者
Cheng Yuan,Xiaofei Yang,Pan Zeng,Jing Mao,Kehua Dai,Liang Zhang,Xueliang Sun
出处
期刊:Nano Energy
[Elsevier BV]
日期:2021-02-24
卷期号:84: 105928-105928
被引量:193
标识
DOI:10.1016/j.nanoen.2021.105928
摘要
Lithium-sulfur (Li-S) batteries have been considered as one of the most promising energy storage systems owing to their high specific capacity, high energy density, and environmental benignity. However, Li-S batteries still suffer from severe polysulfide shuttle effect and sluggish reaction kinetics, which are the intrinsic bottlenecks for their practical applications. Multifarious strategies have been adopted to overcome these bottlenecks and achieve high sulfur utilization and capacity retention for Li-S batteries. Among them, functionalizing separators with catalytic materials can not only effectively inhibit polysulfides shuttle effect but also greatly accelerate sulfur redox reaction kinetics, which could be of great significance for the realization of Li-S batteries with high energy density and long cycle life. Here, we have comprehensively reviewed the recent progress of functional separators for Li-S batteries using various catalytic materials, including metals, metal compounds, metal-organic frameworks, covalent-organic frameworks, heterostructures, and metal-free materials. The preparations, characterizations, advantages, and limitations of these catalytic materials are summarized, aiming to shed fresh light on fundamental understanding of catalytic effects for the improved electrochemical performance. Furthermore, engineering of functional separators and prospects of future design for high-performance Li-S batteries are discussed.
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