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Self-supported Ni3Se2/Ni(OH)2 and Ni3Se2 on Ni-foam: nanostructured arrays for the hydrogen evolution reaction

Authors
  • Briones-Martínez, Ricardo1
  • Garcia-Gomez, Nora A.1
  • Sepúlveda-Guzmán, Selene2
  • de la Parra-Arciniega, Salomé M.1
  • Sánchez, Eduardo M.1
  • 1 Universidad Autónoma de Nuevo León, km 10, Autopista al Aeropuerto Internacional Mariano Escobedo, Apodaca, Nuevo León, 66629, Mexico , Apodaca (Mexico)
  • 2 Universidad Autónoma de Nuevo León, UANL, km 10, Autopista al Aeropuerto Internacional Mariano Escobedo, Apodaca, Nuevo León, 66628, Mexico , Apodaca (Mexico)
Type
Published Article
Journal
Journal of Nanoparticle Research
Publisher
Springer-Verlag
Publication Date
Nov 23, 2020
Volume
22
Issue
12
Identifiers
DOI: 10.1007/s11051-020-05088-y
Source
Springer Nature
Keywords
License
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Abstract

In the present research, self-supported hierarchical nanocomposites of Ni3Se2/Ni(OH)2/Ni and Ni3Se2/Ni were developed and their performance as a hydrogen evolution reaction (HER) catalyst for alkaline electrolytic water splitting was demonstrated. The composite Ni3Se2/Ni(OH)2/Ni was obtained through a hydrothermal process and subsequent selenization reaction by heat treatment, while the Ni3Se2/Ni was synthesized only through a selenization reaction by heat treatment. The materials were characterized by confocal microscopy, transmission electron microscopy, scanning electron microscopy, energy-dispersive X-ray spectroscopy, X-ray diffraction, and Raman spectroscopy. The results that displayed different structures were grown on the Ni-foam, such as Ni(OH)2 nanoleaflets, Ni3Se2 nanosticks composed of spheres, and Ni3Se2 nanowires between Ni(OH)2 nanoleaflets, for Ni(OH)2/Ni, Ni3Se2/Ni, and Ni3Se2/Ni(OH)2/Ni composites, respectively. The catalysts exhibited an excellent hydrogen evolution reaction activity with overpotentials of 170.0 and 194.8 mV at a current density of 10 mA cm−2, with a Tafel slope of 123.5 and 127.3 mV decade−1 for Ni3Se2/Ni and Ni3Se2/Ni(OH)2/Ni, respectively. Graphical abstract

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