Nitrogen and titanium-codoped porous carbon nanocomposites derived from metal–organic framework as cathode to address polysulfides shuttle effects by Ti-assisted N-inhibiting strategy

Abstract

To address the problem of shutting effect of Li–S batteries, we used Ti-based MOF as precursor to obtain a conductive matrix with dual inhibitors. The target material, namely NTiPC, shown remarkable discharge capacity with 1178 mA h g⁻¹, and maintained at 732 mA h g⁻¹ after 100 cycles. The results indicated the N- and Ti-active sites synergistic acted with conductive framework can facilitate binding reaction between matrix and polysulfides.