Web of Science: 26 cites, Scopus: 25 cites, Google Scholar: cites,
Role of Boron and Phosphorus in Enhanced Electrocatalytic Oxygen Evolution by Nickel Borides and Nickel Phosphides
Masa, Justus (Ruhr-Universität Bochum. Center for Electrochemical Sciences)
Andronescu, Corina (Ruhr-Universität Bochum. Center for Electrochemical Sciences)
Antoni, Hendrik (Ruhr-Universität Bochum)
Sinev, Ilya (Ruhr-Universität Bochum. Department of Physics)
Seisel, Sabine (Ruhr-Universität Bochum. Center for Electrochemical Sciences)
Elumeeva, Karina (Ruhr-Universität Bochum. Center for Electrochemical Sciences)
Barwe, Stephan (Ruhr-Universität Bochum. Center for Electrochemical Sciences)
Martí-Sánchez, Sara (Institut Català de Nanociència i Nanotecnologia)
Arbiol i Cobos, Jordi (Institut Català de Nanociència i Nanotecnologia)
Roldan Cuenya, Beatriz (Fritz-Haber Institute of the Max Planck Society)
Muhler, Martin (Ruhr-Universität Bochum. Department of Physics)
Schuhmann, Wolfgang (Ruhr-Universität Bochum. Center for Electrochemical Sciences)

Data: 2019
Resum: The modification of nickel with boron or phosphorus leads to significant enhancement of its electrocatalytic activity for the oxygen evolution reaction (OER). However, the precise role of the guest elements, B and P, in enhancing the OER of the host element (Ni) remains unclear. Herein, we present insight into the role of B and P in enhancing electrocatalysis of oxygen evolution by nickel borides and nickel phosphides. The apparent activation energy, E*, of electrocatalytic oxygen evolution on NiP was 78. 4 kJ/mol, on NiB 65. 4 kJ/mol, and on Ni nanoparticles 94. 0 kJ/mol, thus revealing that both B and P affect the intrinsic activity of nickel. XPS data revealed shifts of −0. 30 and 0. 40 eV in the binding energy of the Ni 2p peak of NiB and NiP, respectively, with respect to that of pure Ni at 852. 60 eV, thus indicating that B and P induce opposite electronic effects on the surface electronic structure of Ni. The origin of enhanced activity for oxygen evolution cannot, therefore, be attributed to such electronic modification or ligand effect. Severe changes induced on the nickel lattice, specifically, the Ni-Ni atomic order and interatomic distances (strain effect), by the presence of the guest atoms seem to be the dominant factors responsible for enhanced activity of oxygen evolution in nickel borides and nickel phosphides.
Nota: Número d'acord de subvenció AGAUR/2017/SGR-327
Nota: Número d'acord de subvenció MINECO/ENE2017-85087-C3
Nota: Número d'acord de subvenció MINECO/SEV-2013-0295
Drets: Tots els drets reservats.
Llengua: Anglès
Document: article ; recerca ; Versió sotmesa a revisió
Matèria: Nickel boride ; Nickel phosphide ; Oxygen evolution ; Boron ; Phosphorus
Publicat a: ChemElectroChem, Vol. 6, Issue 1 (January 2019) , p. 235-240, ISSN 2196-0216

DOI: 10.1002/celc.201800669


Preprint
19 p, 5.8 MB

El registre apareix a les col·leccions:
Documents de recerca > Documents dels grups de recerca de la UAB > Centres i grups de recerca (producció científica) > Ciències > Institut Català de Nanociència i Nanotecnologia (ICN2)
Articles > Articles de recerca
Articles > Articles publicats

 Registre creat el 2020-02-06, darrera modificació el 2021-06-11



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