Self-branched Nb2O5 nanoarrays as “electron-ion reservoirs” to enhance the conversion of polysulfides in flexible Li–S batteries

A novel sulfur matrix integrating self-branched Nb 2 O 5 nanoarrays and flexible carbon cloth (NBCC) is designed. Intriguingly, the selected Nb 2 O 5 nanoarrays can work as “electron-ion reservoirs” to accelerate the conversion reaction of LiPSs.