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Research Article | Open Access | Just Accepted

Porous MnO2 as a high-performance cathode for zinc-ion batteries via the dissolution/deposition mechanism

Wenhai Wang1,2,3, Shuoshuo Ban2, Nanzhe Li2, Mingfu Ye2,3,4, Mingyue Wang1( ), Nan Yu4,5( ), Konglin Wu2 ( )

1 School of Chemistry and Chemical Engineering, Huangshan University, Huangshan 245041, China

2 School of Chemistry and Chemical Engineering, Anhui University of Technology, Maanshan 243032, China

3 Key Laboratory of Advanced Electrode Materials for Novel Solar Cells for Petroleum and Chemical Industry of China, School of Chemistry and Life Sciences, Suzhou University of Science and Technology, Suzhou 215009, China

4 State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211816, China

5 College of Chemistry and Materials Science, The Key Laboratory of Electrochemical Clean Energy of Anhui Higher Education Institutes, Anhui Provincial Engineering Laboratory for New-Energy Vehicle Battery Energy-Storage Materials, Anhui Normal University, Wuhu 241002, China

6 State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China

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Abstract

Zinc-ion batteries (ZIBs) are deemed as a prospective battery technology in virtue of their intrinsic safety, low cost and environmental friendliness. Nevertheless, the sluggish ion transport kinetics is an important factor constraining the practical viability of ZIBs. Herein, porous MnO2 was synthesized by a self‑assembly assisted hydrothermal process to facilitate ion diffusion. The electrochemical results show that porous MnO2 outlines extraordinary electrochemical performance with an exceptional capacity of 207 mAh g-1 at 0.2 A g-1 after 100 cycles, significantly outperforming Mn2O3 (85 mAh g-1) and MnO (28 mAh g-1). Furthermore, the charge storage process of porous MnO2 was investigated, which is dominated by the dissolution/deposition of MnO2 mechanism, providing new insights into the rational design of advanced manganese oxides.

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Keywords

manganese oxidescathodeshigh-performancezinc-ion battery

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Energy Materials and Devices
DOI: 10.26599/EMD.2026.9370100

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Cite this article:
Wang W, Ban S, Li N, et al. Porous MnO2 as a high-performance cathode for zinc-ion batteries via the dissolution/deposition mechanism. Energy Materials and Devices, 2026, https://doi.org/10.26599/EMD.2026.9370100

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Received: 07 May 2026
Revised: 31 May 2026
Accepted: 18 June 2026
Available online: 25 June 2026

© The Author(s) 2026. Published by Tsinghua University Press.

The articles published in this open access journal are distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits use, distribution and reproduction in any medium, provided the original work is properly cited.