Tough, Anti‐Fatigue, Self‐Adhesive, and Anti‐Freezing Hydrogel Electrolytes for Dendrite‐Free Flexible Zinc Ion Batteries and Strain Sensors

Abstract Quasi‐solid aqueous zinc ion batteries (AZIBs) based on flexible hydrogel electrolytes are promising substitutions of lithium‐ion batteries owing to their intrinsic safety, low cost, eco‐friendliness and wearability. However, it remains a challenge to lower the freezing point without sacrificing the fundamental advantages of hydrogel electrolytes such as conductivity and mechanical properties. Herein, an all‐around hydrogel electrolyte is constructed through a convenient energy dissipation strategy via the rapid and reversible intramolecular/intermolecular ligand exchanges between Zn 2+ and alterdentate ligands. The as‐obtained hydrogel exhibits excellent mechanical properties, fatigue resistance,…

• NN
  National Natural Science Foundation of China

  Awards: 61825403, 22022505, 22271139, 21872069, 21905131
• FR
  Fundamental Research Funds for the Central Universities

  Awards: 020514380272, 020514380274, 020514380266