Solid Interhalogen Compounds with Effective Br0 Fixing for Stable High-energy Zinc Batteries

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

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Author(s)

  • Yiran Ying
  • Shengnan Wang
  • Longtao Ma
  • Haitao Huang
  • Xiaoqi Wang
  • Xu Jin
  • Shengchi Bai

Detail(s)

Original languageEnglish
Article numbere202301467
Journal / PublicationAngewandte Chemie - International Edition
Volume62
Issue number19
Online published7 Mar 2023
Publication statusPublished - 2 May 2023

Abstract

Though massive efforts have been devoted to exploring Br-based batteries, the highly soluble Br2/Br3 species causing rigorous “shuttle effect”, leads to severe self-discharge and low Coulombic efficiency. Conventionally, quaternary ammonium salts such as methyl ethyl morpholinium bromide (MEMBr) and tetrapropylammonium bromide (TPABr) are used to fix Br2 and Br3, but they occupy the mass and volume of battery without capacity contribution. Here, we report an all-active solid interhalogen compound, IBr, as a cathode to address the above challenges, in which the oxidized Br0 is fixed by iodine (I), thoroughly eliminating cross-diffusing Br2/Br3 species during the whole charging and discharging process. The Zn||IBr battery delivers remarkably high energy density of 385.8 Wh kg−1, which is higher than those of I2, MEMBr3, and TPABr3 cathodes. Our work provides new approaches to achieve active solid interhalogen chemistry for high-energy electrochemical energy storage devices. © 2023 Wiley-VCH GmbH.

Research Area(s)

  • Active Solid Interhalogen Chemistry, Br0 Fixing, High-Energy Zinc Batteries, Shuttle Effect

Citation Format(s)

Solid Interhalogen Compounds with Effective Br0 Fixing for Stable High-energy Zinc Batteries. / Chen, Shengmei; Ying, Yiran; Wang, Shengnan et al.
In: Angewandte Chemie - International Edition, Vol. 62, No. 19, e202301467, 02.05.2023.

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