Unraveling the Mechanism of Cooperative Redox Chemistry in High-Efficient Zn2+ Storage of Vanadium Oxide Cathode

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

  • Lijun Zhou
  • Ping Li
  • Chenghui Zeng
  • Ang Yi
  • Jinhao Xie
  • Fuxin Wang
  • Dezhou Zheng
  • Xihong Lu

Related Research Unit(s)

Detail(s)

Original languageEnglish
Article number2305749
Journal / PublicationAdvanced Science
Volume11
Issue number1
Online published14 Nov 2023
Publication statusPublished - 5 Jan 2024

Link(s)

Abstract

The inferior capacity and cyclic durability of V2O5 caused by inadequate active sites and sluggish kinetics are the main problems to encumber the widespread industrial applications of vanadium-zinc batteries (VZBs). Herein, a cooperative redox chemistry (CRC) as “electron carrier” is proposed to facilitate the electron-transfer by capturing/providing electrons for the redox of V2O5. The increased oxygen vacancies in V2O5 provoked in situ by CRC offers numerous Zn2+ storage sites and ion-diffusion paths and reduces the electrostatic interactions between vanadium-based cathode and intercalated Zn2+, which enhance Zn2+ storage capability and structural stability. The feasibility of this strategy is fully verified by some CRCs. Noticeably, VZB with [Fe(CN)6]3−/[Fe(CN)6]4− as CRC displays conspicuous specific capacity (433.3 mAh g−1), ≈100% coulombic efficiency and superb cyclability (≈3500 cycles without capacity attenuation). Also, the mechanism and selection criteria of CRC are specifically unraveled in this work, which provides insightful perspectives for the development of high-efficiency energy-storage devices. © 2023 The Authors. Advanced Science published by Wiley-VCH GmbH.

Research Area(s)

  • cooperative redox chemistry, electron carrier, high capacity, vanadium oxide, Zn ion batteries

Citation Format(s)

Unraveling the Mechanism of Cooperative Redox Chemistry in High-Efficient Zn2+ Storage of Vanadium Oxide Cathode. / Zhou, Lijun; Li, Ping; Zeng, Chenghui et al.
In: Advanced Science, Vol. 11, No. 1, 2305749, 05.01.2024.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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