Cheng Zhibin, Lian Jie, Zhang Jindan, Xiang Shengchang, Chen Banglin, Zhang Zhangjing
Fujian Key Laboratory of Polymer Materials, College of Materials Science and Engineering, Fujian Normal University, Fuzhou, 350007, China.
State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002, China.
Adv Sci (Weinh). 2024 Aug;11(31):e2404834. doi: 10.1002/advs.202404834. Epub 2024 Jun 18.
Lithium-sulfur (Li-S) batteries have attracted significant attention in the realm of electronic energy storage and conversion owing to their remarkable theoretical energy density and cost-effectiveness. However, Li-S batteries continue to face significant challenges, primarily the severe polysulfides shuttle effect and sluggish sulfur redox kinetics, which are inherent obstacles to their practical application. Metal-organic frameworks (MOFs), known for their porous structure, high adsorption capacity, structural flexibility, and easy synthesis, have emerged as ideal materials for separator modification. Efficient polysulfides interception/conversion ability and rapid lithium-ion conduction enabled by MOFs modified layers are demonstrated in Li-S batteries. In this perspective, the objective is to present an overview of recent advancements in utilizing pristine MOF materials as modification layers for separators in Li-S batteries. The mechanisms behind the enhanced electrochemical performance resulting from each design strategy are explained. The viewpoints and crucial challenges requiring resolution are also concluded for pristine MOFs separator in Li-S batteries. Moreover, some promising materials and concepts based on MOFs are proposed to enhance electrochemical performance and investigate polysulfides adsorption/conversion mechanisms. These efforts are expected to contribute to the future advancement of MOFs in advanced Li-S batteries.
锂硫（Li-S）电池因其卓越的理论能量密度和成本效益，在电子能量存储与转换领域备受关注。然而，Li-S电池仍面临重大挑战，主要是严重的多硫化物穿梭效应和缓慢的硫氧化还原动力学，这是其实际应用的固有障碍。金属有机框架（MOF）以其多孔结构、高吸附容量、结构灵活性和易于合成而闻名，已成为隔膜改性的理想材料。Li-S电池中展示了由MOF改性层实现的高效多硫化物拦截/转换能力和快速锂离子传导。从这个角度来看，目的是概述利用原始MOF材料作为Li-S电池隔膜改性层的最新进展。解释了每种设计策略导致电化学性能增强背后的机制。还总结了Li-S电池中原始MOF隔膜需要解决的观点和关键挑战。此外，提出了一些基于MOF的有前景的材料和概念，以提高电化学性能并研究多硫化物吸附/转换机制。这些努力有望为MOF在先进Li-S电池中的未来发展做出贡献。
