(Co,Ni,Mn,Cu,Zn)O High-Entropy Oxide Nanotubes as Efficient Bifunctional Electrocatalyst for Oxygen Evolution and Hydrazine Oxidation Reactions

Authors

• Pan-Yan Chen, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou 221116, Jiangsu, China
• Wan-Wan Wu, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou 221116, Jiangsu, China
• Heng Bian, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou 221116, Jiangsu, China
• Wei-Wei Li, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou 221116, Jiangsu, China
• Xin-Sheng Zhao, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou 221116, Jiangsu, ChinaFollow
• Lu Wei, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou 221116, Jiangsu, ChinaFollow

Corresponding Author

Xin-Sheng Zhao (xinshengzhao@jsnu.edu.cn);
Lu Wei (lwei057@jsnu.edu.cn)

Abstract

High-entropy oxides (HEOs) present significant scientific challenges in both design and synthesis due to their multielement and high-entropy nature, which involves complex combinations of multiple metal cations and oxygen anions, typically arranged in equimolar ratios to achieve structural stability. Herein, one-dimensional (Co,Ni,Mn,Cu,Zn)O high-entropy oxide nanotubes (HEO-NTs) are fabricated by means of a gradient electrospinning strategy with a tailored polyvinyl alcohol (PVA) molecular weight distribution and controlled pyrolysis. Benefiting from the HEO features and the synergistic effect of multicomponent sites, the as-synthesized (Co,Ni,Mn,Cu,Zn)O HEO-NTs exhibit exceptional bifunctional electrocatalytic activity for the oxygen evolution and hydrazine oxidation reactions (OER/HzOR). This study offers new insight into the design of HEO-NTs and unveiling the multicomponent synergy on HEOs for enhanced electrocatalytic activities of OER and HzOR.

Graphical Abstract

Keywords

High-entropy oxides, Nanotubes, Electrocatalysts, Oxygen evolution reaction, Hydrazine oxidation reaction

DOI Link

https://doi.org/10.61558/2993-074X.3608

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

Publication Date

2026-05-28

Online Available Date

2026-03-11

Revised Date

2026-02-14

Received Date

2025-11-27

Recommended Citation

Pan-Yan Chen, Wan-Wan Wu, Heng Bian, Wei-Wei Li, Xin-Sheng Zhao, Lu Wei. (Co,Ni,Mn,Cu,Zn)O High-Entropy Oxide Nanotubes as Efficient Bifunctional Electrocatalyst for Oxygen Evolution and Hydrazine Oxidation Reactions[J]. Journal of Electrochemistry, 2026, 32(5): 2511271.
DOI: 10.61558/2993-074X.3608
Available at: https://jelectrochem.xmu.edu.cn/journal/vol32/iss5/2