Anion-Trap Engineering toward Remarkable Crystallographic Reorientation and Efficient Cation Migration of Zn Ion Batteries

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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  • Meijia Qiu
  • Peng Sun
  • Yu Wang
  • Liang Ma
  • Wenjie Mai


Original languageEnglish
Article numbere202210979
Journal / PublicationAngewandte Chemie - International Edition
Issue number44
Online published29 Aug 2022
Publication statusPublished - 2 Nov 2022


Zn batteries are considered as potential candidates in future power sources, however suffer problems of rampant dendrite/by-product on Zn anodes, torpid Zn2+ transfer/diffusion and poor energy density. Inspired by the host-guest interaction chemistry, an anion-trap agent β-cyclodextrin (β-CD) is introduced into the Zn(ClO4)2 electrolyte to induce dominant Zn (002) deposition and improve Zn2+ migration behaviors. The anion ClO4 is revealed to be trapped inside the cavity of β-CD, impairing barriers for Zn2+ migration and significantly elevating the Zn2+ transference number to 0.878. Meanwhile, the β-CD@ClO4 complex shows the function in preferential growth of the Zn (002), blocking the approach of dendrite growth. Above combined functions lead to substantial enhancement in long-term stability and cell capacity, as proved by 10 times longer life of Zn||Zn symmetric cells and 57 % capacity increasement of Zn-MnO2 full cells (at 0.1 A g−1) compared with that of pure Zn(ClO4)2 electrolyte.

Research Area(s)

  • Anion-Trap, Crystallographic Reorientation, Efficient Cation Migration, Zn Ion Batteries

Citation Format(s)