Self-supported Ni 3 Se 2 /Ni(OH) 2 and Ni 3 Se 2 on Ni-foam: nanostructured arrays for the hydrogen evolution reaction
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RESEARCH PAPER
Self-supported Ni3Se2/Ni(OH)2 and Ni3Se2 on Ni-foam: nanostructured arrays for the hydrogen evolution reaction Ricardo Briones-Martínez & Nora A. Garcia-Gomez & Selene Sepúlveda-Guzmán & Salomé M. de la Parra-Arciniega & Eduardo M. Sánchez
Received: 6 February 2020 / Accepted: 10 November 2020 # Springer Nature B.V. 2020
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 Nifoam, 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 R. Briones-Martínez : N. A. Garcia-Gomez (*) : S. M. de la Parra-Arciniega : E. M. Sánchez Centro de Investigación en Biotecnología y Nanotecnología, CIBYN, Facultad de Ciencias Químicas, Universidad Autónoma de Nuevo León, km 10, Autopista al Aeropuerto Internacional Mariano Escobedo, 66629 Apodaca, Nuevo León, Mexico e-mail: [email protected] S. Sepúlveda-Guzmán Centro de Innovación, Investigación y Desarrollo en Ingeniería y Tecnología, CIIDIT, Facultad de Ingeniería Mecánica y Eléctrica, Universidad Autónoma de Nuevo León, UANL, km 10, Autopista al Aeropuerto Internacional Mariano Escobedo, 66628 Apodaca, Nuevo León, Mexico
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.
Keywords Electrocatalyst . HER . Nickel selenide . Self-supported composite . Ni-foam . Hierarchical nanostructures
Introduction Within the search for alternative technologies for the generation of clean energy, the promotion of fuel cells has called for the development of devices that convert chemical energy into electrical energy. These devices use hydrogen and oxygen as fuels to produce electricity and heat. The fuel cells provide efficiency between 50 and 80% compared to conventional technologies that use a multi-step conversion up to 3 times higher. Among the limitations that these devices face for large-scale use are the distribution, generation, and storage of fuel so that it can compete with the developed fossil fuel infrastructure (Armaroli and Balzani 2011; Breeze 2019; Haseli 2018; Hu et al. 2020; Wenzl 2009). The use of fuel cells as sources of clean en
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