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Controlled synthesis of bifunctional particle-like Mo/Mn-NixSy/NF electrocatalyst for highly efficient overall water splitting.
- Source :
- Dalton Transactions: An International Journal of Inorganic Chemistry; 5/28/2019, Vol. 48 Issue 20, p6718-6729, 12p
- Publication Year :
- 2019
-
Abstract
- Heteroatom-doping engineering has been recognized as an effective strategy to improve the activity and stability of electrocatalytic materials. Herein, we fabricated a bimetallic Mo/Mn codoped three-phase nickel sulfide on Ni foam, with Mo/Mn-Ni<subscript>x</subscript>S<subscript>y</subscript>/NF successfully synthesized via hydrothermal synthesis and calcination. In order to better explore the codoping effect of Mo/Mn, we also synthesised Ni<subscript>3</subscript>S<subscript>2</subscript>/NF, NiS@Ni<subscript>0.96</subscript>S/NF, Mo-Ni<subscript>3</subscript>S<subscript>2</subscript>/NF and Mn-NiS@Ni<subscript>0.96</subscript>S/NF and their electrocatalytic activities (HER, OER, and overall water splitting) were systematically investigated. As expected, Mo/Mn-Ni<subscript>x</subscript>S<subscript>y</subscript>/NF catalysts exhibited excellent catalytic activities and long-term durability. High electrochemical performance of Mo/Mn-Ni<subscript>x</subscript>S<subscript>y</subscript>/NF exceeded that of most reported non-precious metal catalysts and also benchmark RuO<subscript>2</subscript>, IrO<subscript>2</subscript> and Pt/C. Moreover, in order to better understand the catalytic process, three possible mechanisms were further proposed to rationalize the enhanced electrocatalytic performance. Our work might broaden the avenue to construct efficient non-precious bifunctional catalysts and further develop large-scale electricity-to-hydrogen applications. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 14779226
- Volume :
- 48
- Issue :
- 20
- Database :
- Complementary Index
- Journal :
- Dalton Transactions: An International Journal of Inorganic Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 154435169
- Full Text :
- https://doi.org/10.1039/c9dt00957d