(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, China.
• Wan-Wan Wu, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou 221116, China.
• Heng Bian, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou 221116, China.
• Wei-Wei Li, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou 221116, China.
• Xin-Sheng Zhao, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou 221116, China.Follow
• Lu Wei, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou 221116, China.Follow

Document Type

Article

Corresponding Author(s)

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

10.61558/2993-074X.3608

Online Date

3-11-2026

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, doi: 10.61558/2993-074X.3608.