Hierarchical (Ni,Co)Se 2 /Carbon Hollow Rhombic Dodecahedra Derived from Metal-Organic Frameworks for Efficient Water-Splitting Electrocatalysis

Handle URI:
http://hdl.handle.net/10754/625339
Title:
Hierarchical (Ni,Co)Se 2 /Carbon Hollow Rhombic Dodecahedra Derived from Metal-Organic Frameworks for Efficient Water-Splitting Electrocatalysis
Authors:
Ming, Fangwang; Liang, Hanfeng; Shi, Huanhuan; Mei, Gui; Xu, Xun; Wang, Zhoucheng
Abstract:
In this work, we demonstrate that the electrocatalytic activity of transition metal chalcogenides can be greatly enhanced by simultaneously engineering the active sites, surface area, and conductivity. Using metal-organic frameworks-derived (Ni,Co)Se2/C hollow rhombic dodecahedra (HRD) as a demonstration, we show that the incorporation of Ni into CoSe2 could generates additional active sites, the hierarchical hollow structure promotes the electrolyte diffusion, the in-situ hybridization with C improves the conductivity. As a result, the (Ni,Co)Se2/C HRD exhibit superior performance toward the overall water-splitting electrocatalysis in 1M KOH with a cell voltage as low as 1.58V at the current density of 10mAcm−2, making the (Ni,Co)Se2/C HRD as a promising alternative to noble metal catalysts for water splitting.
KAUST Department:
Materials Science and Engineering Program
Citation:
Ming F, Liang H, Shi H, Mei G, Xu X, et al. (2017) Hierarchical (Ni,Co)Se 2 /Carbon Hollow Rhombic Dodecahedra Derived from Metal-Organic Frameworks for Efficient Water-Splitting Electrocatalysis. Electrochimica Acta. Available: http://dx.doi.org/10.1016/j.electacta.2017.08.047.
Publisher:
Elsevier BV
Journal:
Electrochimica Acta
Issue Date:
12-Aug-2017
DOI:
10.1016/j.electacta.2017.08.047
Type:
Article
ISSN:
0013-4686
Sponsors:
The authors thank the National Natural Science Foundation of China (No. 51372212) for financial support.
Additional Links:
http://www.sciencedirect.com/science/article/pii/S0013468617316869
Appears in Collections:
Articles; Materials Science and Engineering Program

Full metadata record

DC FieldValue Language
dc.contributor.authorMing, Fangwangen
dc.contributor.authorLiang, Hanfengen
dc.contributor.authorShi, Huanhuanen
dc.contributor.authorMei, Guien
dc.contributor.authorXu, Xunen
dc.contributor.authorWang, Zhouchengen
dc.date.accessioned2017-08-14T06:41:38Z-
dc.date.available2017-08-14T06:41:38Z-
dc.date.issued2017-08-12en
dc.identifier.citationMing F, Liang H, Shi H, Mei G, Xu X, et al. (2017) Hierarchical (Ni,Co)Se 2 /Carbon Hollow Rhombic Dodecahedra Derived from Metal-Organic Frameworks for Efficient Water-Splitting Electrocatalysis. Electrochimica Acta. Available: http://dx.doi.org/10.1016/j.electacta.2017.08.047.en
dc.identifier.issn0013-4686en
dc.identifier.doi10.1016/j.electacta.2017.08.047en
dc.identifier.urihttp://hdl.handle.net/10754/625339-
dc.description.abstractIn this work, we demonstrate that the electrocatalytic activity of transition metal chalcogenides can be greatly enhanced by simultaneously engineering the active sites, surface area, and conductivity. Using metal-organic frameworks-derived (Ni,Co)Se2/C hollow rhombic dodecahedra (HRD) as a demonstration, we show that the incorporation of Ni into CoSe2 could generates additional active sites, the hierarchical hollow structure promotes the electrolyte diffusion, the in-situ hybridization with C improves the conductivity. As a result, the (Ni,Co)Se2/C HRD exhibit superior performance toward the overall water-splitting electrocatalysis in 1M KOH with a cell voltage as low as 1.58V at the current density of 10mAcm−2, making the (Ni,Co)Se2/C HRD as a promising alternative to noble metal catalysts for water splitting.en
dc.description.sponsorshipThe authors thank the National Natural Science Foundation of China (No. 51372212) for financial support.en
dc.publisherElsevier BVen
dc.relation.urlhttp://www.sciencedirect.com/science/article/pii/S0013468617316869en
dc.rightsNOTICE: this is the author’s version of a work that was accepted for publication in Electrochimica Acta. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Electrochimica Acta, 12 August 2017. DOI: 10.1016/j.electacta.2017.08.047. © 2017. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/en
dc.subjectmetal-organic frameworksen
dc.subjectNi0.67Co0.33Se2/Cen
dc.subjecthydrogen evolution reaction (HER)en
dc.subjectoxygen evolution reaction (OER)en
dc.subjectwater-splitting electrocatalysisen
dc.titleHierarchical (Ni,Co)Se 2 /Carbon Hollow Rhombic Dodecahedra Derived from Metal-Organic Frameworks for Efficient Water-Splitting Electrocatalysisen
dc.typeArticleen
dc.contributor.departmentMaterials Science and Engineering Programen
dc.identifier.journalElectrochimica Actaen
dc.eprint.versionPost-printen
dc.contributor.institutionCollege of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Chinaen
kaust.authorLiang, Hanfengen
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