高效(Co,Ni,Mn,Cu,Zn)O高熵氧化物纳米管双功能电催化剂用于氧析出及肼氧化反应
收稿日期: 2025-11-27
修回日期: 2026-02-14
录用日期: 2026-03-11
网络出版日期: 2026-03-11
(Co,Ni,Mn,Cu,Zn)O High-Entropy Oxide Nanotubes as Efficient Bifunctional Electrocatalyst for Oxygen Evolution and Hydrazine Oxidation Reactions
Pan-Yan Chen: writing, experiment, data collection and analysis; Wan-Wan Wu: investigation, data analysis; Heng Bian: experiment, investigation; Wei-Wei Li: conceptualization, software; Xin-Sheng Zhao: funding acquisition, supervision; Lu Wei: experimental design, project administration, data analysis, supervision, investigation, funding acquisition, writing-review & editing. All authors read and approved the final manuscript.
Received date: 2025-11-27
Revised date: 2026-02-14
Accepted date: 2026-03-11
Online published: 2026-03-11
高熵氧化物（HEOs）因其多元素和高熵特性，在设计与合成方面面临重大挑战。这主要源于其需将多种金属阳离子和氧阴离子以等摩尔比例进行复杂组合，以实现稳定的晶体结构。本文采用一种梯度静电纺丝策略，通过调控聚乙烯醇的分子量分布并结合可控热解工艺，成功制备了一维(Co,Ni,Mn,Cu,Zn)O高熵氧化物纳米管（HEO-NTs）。得益于高熵特性及多组分位点的协同效应，所合成的(Co,Ni,Mn,Cu,Zn)O HEO-NTs在氧析出反应（OER）与肼氧化反应（HzOR）中表现出卓越的双功能电催化活性。本研究为高熵氧化物纳米管的设计提供了新思路，并揭示了多组分协同效应增强高熵氧化物在OER与HzOR中电催化性能的作用机制。
陈潘妍 , 武婉婉 , 边恒 , 李伟伟 , 赵新生 , 韦露 . 高效(Co,Ni,Mn,Cu,Zn)O高熵氧化物纳米管双功能电催化剂用于氧析出及肼氧化反应[J]. 电化学, 2026 , 32(5) : 2511271 . DOI: 10.61558/2993-074X.3608
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.
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