High-performance multi-component synergistic hydrogel electrolyte with enhanced ion transport for flexible zinc–air batteries and wearable sensors

A conductive hydrogel is prepared via a facile one-pot synthesis. Based on quaternary ammonium chitosan, it achieves high ionic conductivity (324 mS cm −1 ) and enables flexible Zn–air batteries with a power density of 164 mW cm −2 .