Progress in the Design and Application of MOF‐Based Separators in Lithium‐Sulfur Batteries
Yiwen Li, Bing Chen, Chaojiang Fan, Teng Wang, Qing Huang, Lingjiang Kou, Qingpei Zhou, Boyang Wu, Bingying Zhang, Meidan Ding, Siyang Zhu, Keyan Zhao, Wenhu LiABSTRACT
Lithium‐sulfur (Li‐S) batteries offer high theoretical energy density and abundant sulfur reserves, but their practical application is hindered by polysulfide shuttle effects and lithium dendrite growth. Traditional polyolefin separators have inherent limitations. Metal–organic frameworks (MOFs) feature tunable pores, high surface area, and active sites, enabling synergistic “physical sieving, chemical adsorption, and catalytic conversion” to address these challenges. This review systematically summarizes MOF‐based separators for lithium‐sulfur batteries. Six preparation methods are covered: direct coating, in situ growth, layer‐by‐layer self‐assembly, electrospinning, vapor deposition, and electrochemical deposition, along with their respective advantages and disadvantages. Advanced performance‐enhancement strategies include MOF structural engineering, targeted chemical functionalization, and composite design. Finally, future research directions are proposed to accelerate the integration of MOFs into high‐performance lithium‐sulfur batteries.