A Self‐Recognition Separator for Ion Management to Customize Selective Zn 2+ Channels Toward Dendrite‐Free Zinc Metal Anodes

ABSTRACT Aqueous zinc‐ion batteries (ZIBs) are promising candidates for next‐generation energy storage, but the problems related to Zn dendrites and side reactions severely hinder their practical applications. Herein, a self‐recognition separator based on a Bi‐based metal–organic framework (GF@CAU‐17) is developed for ion management to achieve highly reversible Zn anodes. The GF@CAU‐17 has self‐recognition behavior to customize selective Zn 2+ channels, effectively repelling SO 4 2– and H 2 O, but facilitating Zn 2+ conduction. The inherent properties of CAU‐17 result in the repulsion of SO 4 2– ions while disrupting the hydrogen bond network among free H 2 O molecules, restraining side reactions and…

• NN
  National Natural Science Foundation of China

  Award: 22272150
• NS
  Natural Science Foundation of Zhejiang Province

  Awards: LD22B030002, LZ23B030001