UCLA

Aqueous zinc-ion batteries (AZIBs) have been considered as promising candidates for large-scale energy storage due to their high theoretical capacities, low cost, and high safety. However, the leakage and dendrite growth at extreme working conditions seriously limits their application. Herein, an anti-freezing, dendrite-suppressing, and tough hydrogel electrolyte is developed by using polyvinyl alcohol (PVA) as a polymer framework, soaked into a zinc sulfate (ZnSO4)/dimethyl sulfoxide (DMSO)/H2O electrolyte solution.