MOF-derived hollow cage Ni-Co mixed oxide/CNTs nanocomposites with enhanced electrochemical performance for lithium-sulfur batteries

Reasonable design of the cathode host material can effectively improve the electrochemical performance of lithium-sulfur batteries. In this work, a metal-organic framework (MOF)-based strategy was used to synthesize nanocomposites containing carbon nanotubes and nickel-cobalt mixed metal oxide (denoted as Ni-Co oxide/CNTs). The Ni-Co oxide/CNTs/S cathode exhibits excellent electrochemical performance, the high discharge capacity of 1421.7 mAh g(-1) at 0.1 C. This means that the porous Ni-Co oxide interacts well with excellent conductivity CNTs to improve battery performance; indicate that the Ni-Co oxide/CNTs /S is a potential host for the high capacity and cyclic stability lithium-sulfur batteries.