Journal
CHEMICAL PHYSICS LETTERS
Volume 789, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.cplett.2021.139327
Keywords
Polysulfide; High capacity; Lithium-sulfur battery
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Co-N-C/CNT cross-linked three-dimensional network materials with good stability and multiplier performance are prepared through the autocatalytic properties of MOF materials, which can be used as cathode carriers for lithium-sulfur batteries.
Through the autocatalytic properties of MOF materials, Co-N-C/CNT cross-linked three-dimensional network materials are prepared. Co-N-C derived from ZIF-67 can promote the conversion of polysulfide as an active catalytic center, and CNT can not only serve as a carrier for sulfur deposition, but also effectively improve the overall conductivity of the material. By comparison, it shows good stability and multiplier performance when it is used as the cathode carrier of lithium-sulfur battery. It delivers a maximum discharge capacity of 1508 mAh g-(1) at 0.1C, and a high capacity retention of 74.5% after 300 cycles at 1C.
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