MOF derived Co-N-C/CNT crosslinked nets as enhanced carriers for Li-S 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.