High entropy oxide as an efficient electrocatalyst of liquid-solid conversion processes in lithium‑sulfur batteries

Abstract

The distorted lattice effect of high-entropy oxides imparts them with high conductivity, facilitating the efficient transport of electrons and ions. Moreover, the high-entropy oxides exhibit high catalytic conversion activity towards lithium polysulfides (LiPSs) attribute to the synergies among diverse metal cations, and the inherent complex surface can also provide almost continuous adsorption energy. Herein, we synthesized nano-sized HEO through a facile thermal evaporation method for use as a separator modifier in lithium‑sulfur (LiS) batteries. The cell with HEO//PP separator exhibits remarkable cycling stability, retaining 951.5mAh g⁻¹ after 1000 cycles at 1.0C. The exceptional electrochemical performance of the material demonstrates its promising potential for practical applications in LiS batteries.