Abstract In this paper, metal-organic framework-74-Ni/carbon nanotube (MOF-74-Ni/CNT) composite was synthesized via one-pot in situ hydrothermal reaction. The MOF-74-Ni/CNT was characterized and the electrochemical performance was investigated. The composite sulfur cathode prepared by impregnation method delivers a high initial discharge capacity, good rate capability and a low capacity decay of 0.087% per cycle over 400 cycles at 2 C. The significant electrochemical performance was attributed to the combination of the high affinity of MOF-74-Ni to polysulfide anions and the excellent electronic conductivity of carbon nanotube. These results suggest the design of high polar MOF materials with high conductive CNT is an effective strategy to construct a promising sulfur host for Li-S batteries.

中文翻译：

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金属-有机骨架-74-Ni/碳纳米管复合材料作为高性能锂硫电池的硫主体

摘要 本文采用一锅法原位水热反应合成了金属-有机骨架-74-Ni/碳纳米管（MOF-74-Ni/CNT）复合材料。表征了 MOF-74-Ni/CNT，并研究了电化学性能。浸渍法制备的复合硫正极具有较高的初始放电容量和良好的倍率性能，并且在 2 C 下 400 次循环中每循环的容量衰减为 0.087%。显着的电化学性能归因于 MOF 的高亲和力的组合-74-Ni 到多硫化物阴离子和碳纳米管的优异电子导电性。这些结果表明，设计具有高导电性 CNT 的高极性 MOF 材料是构建锂硫电池有前景的硫主体的有效策略。