Electrochemical activation induced multi-valence variation of (NH4)2V4O9 as a high-performance cathode material for zinc-ion batteries

Zhiwei Gan; Lineng Chen; Fangyu Xiong; Xinyin Cai; Wenjun Cui; Xiahan Sang; Qinyou An; Liming Wu

doi:10.1039/D1CC00360G

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Electrochemical activation induced multi-valence variation of (NH₄)₂V₄O₉ as a high-performance cathode material for zinc-ion batteries†

Zhiwei Gan,^a Lineng Chen,^a Fangyu Xiong,^a Xinyin Cai,^a Wenjun Cui,^a Xiahan Sang,^a Qinyou An

*^ab and Liming Wu*^a

Author affiliations

* Corresponding authors

^a State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, Hubei, China
E-mail: anqinyou86@whut.edu.cn, liming_wu@whut.edu.cn

^b Foshan Xianhu Laboratory, Foshan 528216, Guangdong, China

Abstract

In this paper, we found that (NH₄)₂V₄O₉ undergoes an electrochemical activation process in the first charging process at ∼1.4 V (vs. Zn²⁺/Zn), leading to a significant improvement of capacity and cycling stability. The activated vanadium oxides delivered a high specific capacity of 477 mA h g⁻¹ at 50 mA g⁻¹ and outstanding cycling stability with 97.7% capacity retention after 5000 cycles at 15 A g⁻¹.

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Article information

DOI: https://doi.org/10.1039/D1CC00360G
Article type: Communication
Submitted: 21 Jan 2021
Accepted: 05 Mar 2021
First published: 05 Mar 2021

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Chem. Commun., 2021,57, 3615-3618

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Electrochemical activation induced multi-valence variation of (NH₄)₂V₄O₉ as a high-performance cathode material for zinc-ion batteries

Z. Gan, L. Chen, F. Xiong, X. Cai, W. Cui, X. Sang, Q. An and L. Wu, Chem. Commun., 2021, 57, 3615 DOI: 10.1039/D1CC00360G

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Chemical Communications