Issue 53, 2024

Dual-additive-based electrolyte design for aqueous zinc ion batteries with high plating/stripping efficiency

Abstract

A dual-additive-based aqueous electrolyte was designed with a pH-buffering additive (Zn(OAc)2) and an electrostatic shielding additive (TMAOAc) for high Zn plating/stripping efficiency. The buffering pair, OAc/HOAc, can stabilize the pH value to suppress side hydrogen evolution reactions. Meanwhile, TMA+ acts as a competitive cation being preferentially adsorbed on the uneven surface of the Zn anode and exerts an electrostatic shielding effect to facilitate flat Zn deposition. Such a dual-additive-based electrolyte promotes an ultra-high Zn plating/stripping efficiency of 99.9% at 1 mA cm−2 and long-term cycling stability for 3600 h at 0.5 mA cm−2, offering valuable insights for advanced aqueous batteries.

Graphical abstract: Dual-additive-based electrolyte design for aqueous zinc ion batteries with high plating/stripping efficiency

Supplementary files

Article information

Article type
Communication
Submitted
30 Apr 2024
Accepted
01 Jun 2024
First published
03 Jun 2024

Chem. Commun., 2024,60, 6809-6812

Dual-additive-based electrolyte design for aqueous zinc ion batteries with high plating/stripping efficiency

L. Li, Y. Xie, M. Yao, R. Cao, X. Mai, Y. Ji, L. Chen, X. Dong and Y. Xia, Chem. Commun., 2024, 60, 6809 DOI: 10.1039/D4CC02062F

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