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Cobalt‐Vanadium Hydroxide Nanoneedles with a Free‐Standing Structure as High‐Performance Oxygen Evolution Reaction Electrocatalysts
Mingyang Yang1,2; Xuelian Fu1,3; Mengmeng Shao2; Zhenyu Wang1; Lujie Cao1,2; Shuai Gu1; Minchan Li1; Dr. Hua Cheng1; Prof. Yuchao Li3; Prof. Hui Pan2; Prof. Zhouguang Lu1
2019
Source PublicationChemElectroChem
ISSN2196-0216
Volume6Issue:7Pages:2050-2055
Abstract

It is a great challenge to develop electrocatalysts with high efficiency and low cost toward oxygen evolution reaction (OER) for the electrolysis of water. Herein, novel CoV‐hydroxide nanoneedle arrays with freestanding structure is successfully fabricated as new electrocatalysts for OER. Remarkably, the incorporation of V into Co hydroxide can significantly modulate the nanoneedle morphology, which results in the increase of active surface area, and augment the intrinsic activity by tuning the electronic structure. Particularly, we find that the freestanding Co hydroxide nanoneedles with 25 % Co substituted by V (Co0.75V0.25‐HNNs) show the optimum OER catalytic activity and have a low overpotential (268 mV at 10 mA cm−2), a small Tafel slope (80 mV dec−1) and long‐term stability, which are comparable to the other Co‐based and V‐based electrocatalysts for OER reported in literature.

DOIhttps://doi.org/10.1002/celc.201900415
Language英语
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Document TypeJournal article
CollectionFaculty of Science and Technology
INSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
Affiliation1.Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, Guangdong P. R. China
2.Joint Key Laboratory of the Ministry of Education Institute of Applied Physics and Materials Engineering, University of Macau, Macao SAR, P. R. China
3.School of Materials Science and Engineering, Liaocheng University
First Author AffilicationINSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
Recommended Citation
GB/T 7714
Mingyang Yang,Xuelian Fu,Mengmeng Shao,et al. Cobalt‐Vanadium Hydroxide Nanoneedles with a Free‐Standing Structure as High‐Performance Oxygen Evolution Reaction Electrocatalysts[J]. ChemElectroChem,2019,6(7):2050-2055.
APA Mingyang Yang.,Xuelian Fu.,Mengmeng Shao.,Zhenyu Wang.,Lujie Cao.,...&Prof. Zhouguang Lu.(2019).Cobalt‐Vanadium Hydroxide Nanoneedles with a Free‐Standing Structure as High‐Performance Oxygen Evolution Reaction Electrocatalysts.ChemElectroChem,6(7),2050-2055.
MLA Mingyang Yang,et al."Cobalt‐Vanadium Hydroxide Nanoneedles with a Free‐Standing Structure as High‐Performance Oxygen Evolution Reaction Electrocatalysts".ChemElectroChem 6.7(2019):2050-2055.
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