Engineering a deficient-coordinated single-atom indium electrocatalyst for fast redox conversion in practical 500 W h kg −1 -level pouch lithium–sulfur batteries

SAIn@CNT with defect coordination enhances the interaction with LiPSs and weakens the bond energy in LiPSs, which resulted in the reduction of the conversion activation energy. Thus, the battery is endowed with remarkable electrochemical performance.