(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.