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Engineering Sulfide-Phosphide Based Double Catalysts on 3D Nickel Phosphides Framework for Electrolytic Hydrogen Evolution: Activating Short-range Crystalline MoS2 with Ni5P4-Ni2P Template
Shu Hearn Yu1; Wenzhou Chen2; Hongyu Wang1; Dai Haiwen1; Zhen Quan Cavin Ng1,3,4; Hui Pan5; Daniel H. C. Chua1
2020-01-24
Source PublicationJournal of the Electrochemical Society
ISSN0013-4651
Volume167Issue:2
Other Abstract

It is a universal quest to produce molecular hydrogen (H2) from sustainable green routes to diversify the heavy dependence of fossil fuels for energy consumption. Developing earth-abundant electrocatalysts for water electrolysis is a promising method to generate hydrogen via hydrogen evolution reaction (HER). In this work, we strategically promote electron transport and activate the basal planes of MoS2 via a thermal hybridization with vertically-aligned hierarchical nickel phosphide Ni5P4-Ni2P (denoted as MoS2/Ni5P4-Ni2P) for HER. The metallic-like Ni5P4-Ni2P foam promotes electron transportation into the MoS2 matrix by electron injection due to the difference of their Fermi levels. Moreover, MoS2 basal planes are activated by Ni5P4-Ni2P due to phosphorus doping effects, triggering additional actives sites and boosting the overall HER performances. Notably, the HER performance of MoS2/Ni5P4-Ni2P electrode only requires an overpotential of 96 mV to reach a geometric current density of −10 mA cm−2 with relatively low Tafel slope of 74 mV dec−1. The catalytic performances can last for at least 22 h at −10 mA cm−2 without discernible degradation, indicating the extraordinary long-term operation stability. This work provides insights into the synergistic effects of a hybridized catalyst, which may potentially serve as a next-generation electrocatalyst for efficient water splitting.

DOI10.1149/1945-7111/ab6a85
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaElectrochemistry ; Materials Science
WOS SubjectElectrochemistry ; Materials Science, Coatings & Films
WOS IDWOS:000517886300002
Scopus ID2-s2.0-85082168830
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Cited Times [WOS]:2   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionINSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
Affiliation1.Material Science and Engineering,National University of Singapore,Singapore,117575,Singapore
2.School of Materials Science and Engineering,Dongguan University of Technology,Dongguan,523808,China
3.NUS Graduate School for Integrative Sciences and Engineering,National University of Singapore,Singapore,117575,Singapore
4.Department of Physics,National University of Singapore,Singapore,117575,Singapore
5.Institute of Applied Physics and Materials Engineering,University of Macau,Macao
Recommended Citation
GB/T 7714
Shu Hearn Yu,Wenzhou Chen,Hongyu Wang,et al. Engineering Sulfide-Phosphide Based Double Catalysts on 3D Nickel Phosphides Framework for Electrolytic Hydrogen Evolution: Activating Short-range Crystalline MoS2 with Ni5P4-Ni2P Template[J]. Journal of the Electrochemical Society,2020,167(2).
APA Shu Hearn Yu,Wenzhou Chen,Hongyu Wang,Dai Haiwen,Zhen Quan Cavin Ng,Hui Pan,&Daniel H. C. Chua.(2020).Engineering Sulfide-Phosphide Based Double Catalysts on 3D Nickel Phosphides Framework for Electrolytic Hydrogen Evolution: Activating Short-range Crystalline MoS2 with Ni5P4-Ni2P Template.Journal of the Electrochemical Society,167(2).
MLA Shu Hearn Yu,et al."Engineering Sulfide-Phosphide Based Double Catalysts on 3D Nickel Phosphides Framework for Electrolytic Hydrogen Evolution: Activating Short-range Crystalline MoS2 with Ni5P4-Ni2P Template".Journal of the Electrochemical Society 167.2(2020).
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