Co-Mo-P Based Electrocatalyst for Superior Reactivity in the Alkaline Hydrogen Evolution Reaction
[1]
- Department of Chemistry, Temple University, Beury Hall Philadelphia PA 19122 USA; Center for the Computational Design of Functional Layered Materials (CCDM), Temple University, Philadelphia, PA 19122 USA
- Theoretical Sciences Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur 560 064 India; Chemistry and Physics of Materials Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur 560 064 India
- Center for the Computational Design of Functional Layered Materials (CCDM), Temple University, Philadelphia, PA 19122 USA; Department of Physics, Temple University Philadelphia, PA 19122 USA
- Theoretical Sciences Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur 560 064 India
Energy efficient hydrogen production via electrochemical and/or photoelectrochemical water splitting holds significant potential for clean and sustainable energy. Toward this end, a significant amount of research has been focused on developing active earth abundant metal catalysts for the hydrogen evolution reaction (HER) for use in acidic and alkaline media. Here, we report an earth abundant metal-based catalyst for HER under alkaline conditions. The catalyst consisting of Co, Mo and P had a similar HER activity as the precious metal platinum under the conditions used in the study. The Co-Mo-P catalyst is amorphous and was prepared by room temperature electrodeposition. The best Co-Mo-P catalyst exhibited an overpotential of ~30–35 mV for HER at a geometrical current density of 10 mA cm-2 in an alkaline medium. An amorphous Co-Mo-P model was used to simulate the energetics of HER intermediates with density functional theory (DFT). The DFT study suggests that a Co-Mo center acts as the water-dissociation site enhancing the alkaline medium HER.
- Research Organization:
- Energy Frontier Research Centers (EFRC) (United States). Center for Complex Materials from First Principles (CCM); Temple Univ., Philadelphia, PA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- DOE Contract Number:
- SC0012575
- OSTI ID:
- 1566405
- Journal Information:
- ChemCatChem, Vol. 10, Issue 21; ISSN 1867-3880
- Publisher:
- ChemPubSoc Europe
- Country of Publication:
- United States
- Language:
- English
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