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MoSx@NiO Composite Nanostructures : An Advanced Nonprecious Catalyst for Hydrogen Evolution Reaction in Alkaline Media
Ibupoto, Zafar Hussain (University of Sindh Jamshoro)
Tahira, Aneela (Luleå University of Technology. Department of Engineering Sciences and Mathematics)
Tang, PengYi (Institut Català de Nanociència i Nanotecnologia)
Liu, Xianjie (Linkoping University. Department of Physics)
Morante, Joan Ramon (Institut de Recerca en Energia de Catalunya)
Fahlman, Mats (Linkoping University. Department of Physics)
Arbiol i Cobos, Jordi (Institut Català de Nanociència i Nanotecnologia)
Vagin, Mikhail (Linkoping University. Department of Physics)
Vomiero, Alberto (Luleå University of Technology. Department of Engineering Sciences and Mathematics)

Fecha: 2019
Resumen: The design of the earth-abundant, nonprecious, efficient, and stable electrocatalysts for efficient hydrogen evolution reaction (HER) in alkaline media is a hot research topic in the field of renewable energies. A heterostructured system composed of MoS deposited on NiO nanostructures (MoS @NiO) as a robust catalyst for water splitting is proposed here. NiO nanosponges are applied as cocatalyst for MoS in alkaline media. Both NiO and MoS @NiO composites are prepared by a hydrothermal method. The NiO nanostructures exhibit sponge-like morphology and are completely covered by the sheet-like MoS . The NiO and MoS exhibit cubic and hexagonal phases, respectively. In the MoS @NiO composite, the HER experiment in 1 m KOH electrolyte results in a low overpotential (406 mV) to produce 10 mA cm current density. The Tafel slope for that case is 43 mV per decade, which is the lowest ever achieved for MoS -based electrocatalyst in alkaline media. The catalyst is highly stable for at least 13 h, with no decrease in the current density. This simple, cost-effective, and environmentally friendly methodology can pave the way for exploitation of MoS @NiO composite catalysts not only for water splitting, but also for other applications such as lithium ion batteries, and fuel cells.
Nota: Número d'acord de subvenció AGAUR/2017/SGR-327
Nota: Número d'acord de subvenció AGAUR/2017/SGR-1246
Nota: Número d'acord de subvenció MINECO/ENE2017-85087-C3
Nota: Número d'acord de subvenció MINECO/SEV-2013-0295
Derechos: Tots els drets reservats.
Lengua: Anglès.
Documento: article ; recerca ; submittedVersion
Materia: Alkaline media ; Electrolysis ; MoSx@NiO composites
Publicado en: Advanced functional materials, Vol. 29, Issue 7 (February 2019) , art. 1807562, ISSN 1616-3028

DOI: 10.1002/adfm.201807562


Preprint
29 p, 2.1 MB

El registro aparece en las colecciones:
Documentos de investigación > Documentos de los grupos de investigación de la UAB > Centros y grupos de investigación (producción científica) > Ciencias > Institut Català de Nanociència i Nanotecnologia (ICN2)
Artículos > Artículos de investigación
Artículos > Artículos publicados

 Registro creado el 2020-02-06, última modificación el 2020-02-29



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