High-entropy oxides as efficient bidirectional sulfur catalysts for low-temperature lithium–sulfur batteries

Abstract

In this work, a high-entropy oxide catalyst uniformly anchored on reduced graphene oxide is developed with diverse active sites to promote lithium polysulfide conversion and suppress the shuttle effect. Such a separator coating endows lithium–sulfur batteries with outstanding high-loading performance (3.8 mAh cm⁻²) and low-temperature behavior (95% capacity retention at 0 °C after 100 cycles).