Dual-regulated Cu-doped MnO<sub>2</sub>nanowires confined in waste-derived carbon framework for high-performance aqueous zinc-ion batteries

Li Zhixiong; Wu Chengli; Yin ChengJie; Jiao Facun; Zhang Yuanchun; Mao Lirui

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Dual-regulated Cu-doped MnO₂nanowires confined in waste-derived carbon framework for high-performance aqueous zinc-ion batteries

Updated：2026-03-13

- Dual-regulated Cu-doped MnO₂nanowires confined in waste-derived carbon framework for high-performance aqueous zinc-ion batteries
- Chinese Journal of Chemical Engineering Vol. 89, Issue 1, Pages: 102-111(2026)
- Affiliations：
  
  School of Chemical and Blasting Engineering, Anhui University of Science and Technology, Huainan 232001, China
  Engineering Technology Research Center of Coal Resources Comprehensive Utilization, Huainan 232001, China
- Author bio：
  
  Corresponding authors. E-mail addresses: chlwu2@163.com(C. Wu)
  maolirui123@163.com(L. Mao).
- Funds：
- DOI：
  CLC：
- Received：03 July 2025，
  
  Revised：2025-08-22，
  
  Accepted：03 September 2025，
  
  Online First：23 October 2025，
  
  Published：2026-01
- Accepted：
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Li Zhixiong, Wu Chengli, Yin ChengJie, et al. Dual-regulated Cu-doped MnO₂nanowires confined in waste-derived carbon framework for high-performance aqueous zinc-ion batteries[J]. Chinese Journal of Chemical Engineering, 2026, 89(1): 102-111.
DOI：

Li Zhixiong, Wu Chengli, Yin ChengJie, et al. Dual-regulated Cu-doped MnO₂nanowires confined in waste-derived carbon framework for high-performance aqueous zinc-ion batteries[J]. Chinese Journal of Chemical Engineering, 2026, 89(1): 102-111. DOI：

摘要

Abstract

MnO

stands out among cathode materials for aqueous zinc-ion batteries (AZIBs) high capacity and voltage

it has poor stability and slow Zn

kinetics. Herein

we propose a dual-regulation strategy integrating copper doping and carbon-based confinement. Residual carbon (RC)

derived from acidwashed coal gasification fine slag (CGFS)

serves as a conductive and porous framework for the directional growth of Cu-doped MnO

nanowires (CMO@RC). The synergistic modulation of Cu-induced electronic structure tuning and carbon confinement induced mechanical/electrical stabilization significantly enhances Zn

transport and electrochemical performance. CMO@RC achieves a high capacity of 563 mA·h·g

- 1

at 0.1 A·g

- 1

and maintains 106% after 1000 cycles at 1 A·g

- 1

. Kinetic analyses confirm the dual-path Zn

diffusion and accelerated reaction kinetics

while DFT calculations reveal that Cu doping enhances Mn 3d orbital hybridization and electron interaction with carbon

elevating the density of states near the Fermi level and reducing charge transfer barriers. Furthermore

pouch cell testing demonstrates outstanding flexibility and mechanical resilience. This study provides a cost-effective and scalable strategy for high-performance AZIBs

leveraging both experimental and theoretical validations.

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⁰

Dual-regulated Cu-doped MnO2nanowires confined in waste-derived carbon framework for high-performance aqueous zinc-ion batteries

DOI：

摘要

Abstract

关键词

Keywords

references

Dual-regulated Cu-doped MnO₂nanowires confined in waste-derived carbon framework for high-performance aqueous zinc-ion batteries