A multifunctional quasi-solid-state polymer electrolyte with highly selective ion highways for practical zinc ion batteries

The uncontrolled dendrite growth and detrimental parasitic reactions of Zn anodes currently impede the large-scale implementation of aqueous zinc ion batteries. Here, we design a versatile quasi-solid-state polymer electrolyte with highly selective ion transport channels via molecular crosslinking of sodium polyacrylate, lithium magnesium silicate and cellulose nanofiber. The abundant negatively charged ionic channels modulate Zn2+ desolvation process and facilitate ion transport. Moreover, an in-situ formed Zn-Mg-Si medium-entropy alloy on Zn anode allows for an improved Zn nucleation kinetics and homogeneous Zn deposition. These combined advantages of the polymer electrolyte enable Zn anodes to achieve an…

• NN
  National Natural Science Foundation of China

  Awards: U22A20108, 52125405, No. U22A20108, No. 52125405
• CU
  Chulalongkorn University

  Award: N42A660383
• NR
  National Research Council of Thailand

  Award: N42A660383
• TS
  Thailand Science Research and Innovation