Flexible Zinc–Air Batteries with Ampere‐Hour Capacities and Wide‐Temperature Adaptabilities

Abstract Flexible Zn–air batteries (FZABs) have significant potentials as efficient energy storage devices for wearable electronics because of their safeties and high energy‐to‐cost ratios. However, their application is limited by their short cycle lives, low discharge capacities per cycle, and high charge/discharge polarizations. Accordingly, herein, a poly(sodium acrylate)–polyvinyl alcohol (PANa–PVA)–ionic liquid (IL) hydrogel (PANa–PVA–IL) is prepared using a hygroscopic IL, 1‐ethyl‐3‐methylimidazolium chloride, as an additive for twin‐chain PANa–PVA. PANa–PVA–IL exhibits a high conductivity of 306.9 mS cm −1 and a water uptake of 2515 wt% at room temperature. Moreover, a low‐cost bifunctional catalyst,…

• GI
  Guangdong Innovative and Entrepreneurial Research Team Program

  Award: 2021ZT09L197
• NN
  National Natural Science Foundation of China

  Award: 52072205
• CP
  China Postdoctoral Science Foundation

  Award: 2020M680542
• NK
  National Key Research and Development Program of China

  Award: 2019YFA0705700