【摘 要】
：
Metal organic frameworks (MOFs) have been extensively investigated in Li-S batteries owing to high sur-face area,adjustable structures and abundant catalytic sites.Nevertheless,the insulating nature of tradi-tional MOFs render retarded kinetics of polysul
【机 构】
：
Hefei National Laboratory for Physical Science at the Microscale,Department of Material Science and
论文部分内容阅读
Metal organic frameworks (MOFs) have been extensively investigated in Li-S batteries owing to high sur-face area,adjustable structures and abundant catalytic sites.Nevertheless,the insulating nature of tradi-tional MOFs render retarded kinetics of polysulfides conversion,leading to insufficient utilization of sulfur.In comparison,conductive MOFs (c-MOFs) show great potential for promoting polysulfides trans-formation due to superb electronic conductivity.In this work,a nickel-catecholates based c-MOF,Ni-HHTP (HHTP =2,3,6,7,10,11-hexahydroxytriphenylene),is designed to regulate surface chemistry of self-supported carbon paper for advanced Li-S batteries.Taking advantage of the porous structure and high conductivity,the as-prepared Ni-HHTP is conducive to synergising strengthening the chemisorption of polysulfides and accelerating the reaction kinetics in Li-S batteries,significantly mitigating the polysul-fides diffusion from the non-encapsulated sulfur cathode,therefore promoting polysulfides transforma-tion in Li-S batteries.This work points out a promising modification strategy for developing advanced sulfur cathode in Li-S batteries.
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