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Cobalt-Vanadium Hydroxide Nanoneedles with a Free-Standing Structure as High-Performance Oxygen Evolution Reaction Electrocatalysts
Yang,Mingyang1,2; Fu,Xuelian1,3; Shao,Mengmeng2; Wang,Zhenyu1; Cao,Lujie1,2; Gu,Shuai1; Li,Minchan1; Cheng,Hua1; Li,Yuchao3; Pan,Hui2; Lu,Zhouguang1
2019-04-01
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 (CoV-HNNs) show the optimum OER catalytic activity and have a low overpotential (268 mV at 10 mA cm), a small Tafel slope (80 mV dec) and long-term stability, which are comparable to the other Co-based and V-based electrocatalysts for OER reported in literature.

KeywordCov Hydroxide Nanoneedles Electrocatalysts Freestanding Structures Oxygen Evolution Reaction v Incorporation
DOI10.1002/celc.201900415
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaElectrochemistry
WOS SubjectElectrochemistry
WOS IDWOS:000466798700013
Scopus ID2-s2.0-85064345088
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Cited Times [WOS]:18   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionINSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
Corresponding AuthorCheng,Hua; Pan,Hui; Lu,Zhouguang
Affiliation1.Department of Materials Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China
2.Joint Key Laboratory of the Ministry of Education Institute of Applied Physics and Materials Engineering,University of Macau,Macao
3.School of Materials Science and Engineering,Liaocheng University,China
First Author AffilicationINSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
Corresponding Author AffilicationINSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
Recommended Citation
GB/T 7714
Yang,Mingyang,Fu,Xuelian,Shao,Mengmeng,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 Yang,Mingyang,Fu,Xuelian,Shao,Mengmeng,Wang,Zhenyu,Cao,Lujie,Gu,Shuai,Li,Minchan,Cheng,Hua,Li,Yuchao,Pan,Hui,&Lu,Zhouguang.(2019).Cobalt-Vanadium Hydroxide Nanoneedles with a Free-Standing Structure as High-Performance Oxygen Evolution Reaction Electrocatalysts.ChemElectroChem,6(7),2050-2055.
MLA Yang,Mingyang,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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