Customizing Ion Transport by Anionphilic Nanofiber‐Polymer Electrolyte for Stable Zinc Metal Batteries

ABSTRACT The formation of zinc metal dendrites and electrolyte side reactions in rechargeable zinc‐metal batteries (RZMBs) is closely related to ion transport within the electrolyte. In salt‐doped polymer electrolytes, polymer polarity can be used to control ion transport. Here, we report an anionphilic polymer electrolyte with positive relative anion affinity. By introducing a polymer backbone with weak adsorption of cations and another polymer chain with strong adsorption of anions, weakened the cation‐dipole coordination for Zn 2+ , which enables promote the dissociation of salt and restrict the migration of anions. The polymer electrolyte‐design concept is demonstrated by using polyacrylamide and aramid…

• NN
  National Natural Science Foundation of China

  Awards: 42442040, 22522807, U25A20341
• SA
  Science and Technology Commission of Shanghai Municipality

  Award: 24520713300
• SR
  Shanghai Rising-Star Program

  Awards: 24520713300, 24QA2700100
• NK
  National Key Research and Development Program of China

  Award: 2022YFB3803502
• FR
  Fundamental Research Funds for the Central Universities

  Awards: 2232025A-05, 2232025A‐05