In situ BaSO4 coating enabled activation-free and ultra-stable δ-MnO2 for aqueous Zn-ion batteries

Lele Liu; Shouxiang Ding; Lu Yao; Mingqiang Liu; Shunning Li; Qinghe Zhao; Runzhi Qin; Feng Pan

doi:10.1039/D3CC01086D

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In situ BaSO₄ coating enabled activation-free and ultra-stable δ-MnO₂ for aqueous Zn-ion batteries†

Lele Liu,

^a Shouxiang Ding,^a Lu Yao,^a Mingqiang Liu,^b Shunning Li,^a Qinghe Zhao,*^a Runzhi Qin

*^a and Feng Pan

*^a

Author affiliations

* Corresponding authors

^a School of Advanced Materials, Peking University Shenzhen Graduate School, Shenzhen 518055, P. R. China
E-mail: zhaoqh@pku.edu.cn, bushihaoren@pku.edu.cn, panfeng@pkusz.edu.cn

^b Electrochemical Innovation Lab, University College London, London WC1E 7JE, UK

Abstract

In situ BaSO₄ coating, generated in the first discharging of Ba²⁺ pre-intercalated δ-MnO₂, shortens the activation process by inducing fast proton intercalation and stabilizes the MnO₂ crystal by suppressing Mn dissolution. The cathode delivers a decent electrochemical performance of 210 mA h g⁻¹ at 1C with a 98% retention after 200 cycles.

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Article information

DOI: https://doi.org/10.1039/D3CC01086D
Article type: Communication
Submitted: 04 Mar 2023
Accepted: 18 Apr 2023
First published: 19 Apr 2023

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Chem. Commun., 2023,59, 6227-6230

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In situ BaSO₄ coating enabled activation-free and ultra-stable δ-MnO₂ for aqueous Zn-ion batteries

L. Liu, S. Ding, L. Yao, M. Liu, S. Li, Q. Zhao, R. Qin and F. Pan, Chem. Commun., 2023, 59, 6227 DOI: 10.1039/D3CC01086D

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