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

Abstract

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.