Electrostatic‐Sieving Zn 2+ Transport in a Biodegradable HSiO 2 ‐Crosslinked Cationic Hydrogel Enables Ultralong‐Life Zinc‐Ion Batteries
Quasi‐solid‐state aqueous zinc‐ion batteries (ZIBs) represent a promising platform for next‐generation energy storage, yet their practical implementation is hindered by an inherent trade‐off among ionic conductivity, Zn 2+ transference number, and mechanical robustness in gel electrolytes. Herein, we report a rat...