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Nanocrystalline Ni–Cu Electroplated Alloys Cathodes for Hydrogen Generation in Phosphate-Buffered Neutral Electrolytes

Mosaad Negem, H. Nady, Charlie Dunnill Orcid Logo

Journal of Bio- and Tribo-Corrosion, Volume: 6, Issue: 4

Swansea University Author: Charlie Dunnill Orcid Logo

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DOI (Published version): 10.1007/s40735-020-00413-3

Abstract

The use of hydrogen as a green fuel alongside an environmentally friendly electrolyte is the most promising technology required for the conversion and storage of renewable energies and the transition to a low carbon future. Nanocrystalline Ni–Cu alloys have been electroplated onto copper electrodes...

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Published in: Journal of Bio- and Tribo-Corrosion
ISSN: 2198-4220 2198-4239
Published: Springer Science and Business Media LLC 2020
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URI: https://cronfa.swan.ac.uk/Record/cronfa55082
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first_indexed 2020-08-27T10:14:15Z
last_indexed 2020-09-26T03:16:39Z
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spelling 2020-09-25T15:56:39.5712950 v2 55082 2020-08-27 Nanocrystalline Ni–Cu Electroplated Alloys Cathodes for Hydrogen Generation in Phosphate-Buffered Neutral Electrolytes 0c4af8958eda0d2e914a5edc3210cd9e 0000-0003-4052-6931 Charlie Dunnill Charlie Dunnill true false 2020-08-27 CHEG The use of hydrogen as a green fuel alongside an environmentally friendly electrolyte is the most promising technology required for the conversion and storage of renewable energies and the transition to a low carbon future. Nanocrystalline Ni–Cu alloys have been electroplated onto copper electrodes and characterized via scanning electron microscopy, energy dispersive X-ray spectroscopy and X-ray diffraction. The electrocatalytic performance of the electroplated Ni–Cu alloys cathodes for the hydrogen evolution reaction (HER) was investigated using cyclic voltammetry, electrochemical impedance spectroscopy and cathodic polarization measurements in the PBNE. The results demonstrate that the nanocrystalline Ni–Cu alloys cathodes have high electrocatalytic efficiency for HER. The overpotential of HER required to reach a catalytic current density of 10.0 mA/cm2 was 284 mV vs. RHE. The most active cathode was a 30:70 (Atom ratio) Ni:Cu alloy in the PBNE and had 1.5 times higher than standard Pt/C which can be applied as a cathode for H2 production in the industrial water electrolyzer, potentially increasing the efficiency of devices and thus lowering the cost of green hydrogen production. Journal Article Journal of Bio- and Tribo-Corrosion 6 4 Springer Science and Business Media LLC 2198-4220 2198-4239 Ni–Cu alloys; Electrocatalyst; HER; EIS; Nanocrystalline cathode; Ultrasound; Polarization 1 12 2020 2020-12-01 10.1007/s40735-020-00413-3 COLLEGE NANME Chemical Engineering COLLEGE CODE CHEG Swansea University 2020-09-25T15:56:39.5712950 2020-08-27T11:11:21.6716945 Faculty of Science and Engineering School of Engineering and Applied Sciences - Chemical Engineering Mosaad Negem 1 H. Nady 2 Charlie Dunnill 0000-0003-4052-6931 3 55082__18250__a65b4aaae9994215a330fd76bd4897e3.pdf 55082.pdf 2020-09-25T15:53:35.4192986 Output 1070924 application/pdf Accepted Manuscript true 2021-08-19T00:00:00.0000000 true English
title Nanocrystalline Ni–Cu Electroplated Alloys Cathodes for Hydrogen Generation in Phosphate-Buffered Neutral Electrolytes
spellingShingle Nanocrystalline Ni–Cu Electroplated Alloys Cathodes for Hydrogen Generation in Phosphate-Buffered Neutral Electrolytes
Charlie Dunnill
title_short Nanocrystalline Ni–Cu Electroplated Alloys Cathodes for Hydrogen Generation in Phosphate-Buffered Neutral Electrolytes
title_full Nanocrystalline Ni–Cu Electroplated Alloys Cathodes for Hydrogen Generation in Phosphate-Buffered Neutral Electrolytes
title_fullStr Nanocrystalline Ni–Cu Electroplated Alloys Cathodes for Hydrogen Generation in Phosphate-Buffered Neutral Electrolytes
title_full_unstemmed Nanocrystalline Ni–Cu Electroplated Alloys Cathodes for Hydrogen Generation in Phosphate-Buffered Neutral Electrolytes
title_sort Nanocrystalline Ni–Cu Electroplated Alloys Cathodes for Hydrogen Generation in Phosphate-Buffered Neutral Electrolytes
author_id_str_mv 0c4af8958eda0d2e914a5edc3210cd9e
author_id_fullname_str_mv 0c4af8958eda0d2e914a5edc3210cd9e_***_Charlie Dunnill
author Charlie Dunnill
author2 Mosaad Negem
H. Nady
Charlie Dunnill
format Journal article
container_title Journal of Bio- and Tribo-Corrosion
container_volume 6
container_issue 4
publishDate 2020
institution Swansea University
issn 2198-4220
2198-4239
doi_str_mv 10.1007/s40735-020-00413-3
publisher Springer Science and Business Media LLC
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Engineering and Applied Sciences - Chemical Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Chemical Engineering
document_store_str 1
active_str 0
description The use of hydrogen as a green fuel alongside an environmentally friendly electrolyte is the most promising technology required for the conversion and storage of renewable energies and the transition to a low carbon future. Nanocrystalline Ni–Cu alloys have been electroplated onto copper electrodes and characterized via scanning electron microscopy, energy dispersive X-ray spectroscopy and X-ray diffraction. The electrocatalytic performance of the electroplated Ni–Cu alloys cathodes for the hydrogen evolution reaction (HER) was investigated using cyclic voltammetry, electrochemical impedance spectroscopy and cathodic polarization measurements in the PBNE. The results demonstrate that the nanocrystalline Ni–Cu alloys cathodes have high electrocatalytic efficiency for HER. The overpotential of HER required to reach a catalytic current density of 10.0 mA/cm2 was 284 mV vs. RHE. The most active cathode was a 30:70 (Atom ratio) Ni:Cu alloy in the PBNE and had 1.5 times higher than standard Pt/C which can be applied as a cathode for H2 production in the industrial water electrolyzer, potentially increasing the efficiency of devices and thus lowering the cost of green hydrogen production.
published_date 2020-12-01T04:09:03Z
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score 11.036553

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