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Raney Nickel 2.0: Development of a high-performance bifunctional electrocatalyst / William J.F. Gannon, Charles W. Dunnill, Charlie Dunnill

Electrochimica Acta, Start page: 134687

Swansea University Author: Charlie Dunnill

Abstract

As a catalytic coating for alkaline electrolysis Raney Nickel is one of the most efficient materials discovered, based largely on the activity of nickel and the porosity of the alloy after leaching. This study improves the electrochemical and corrosion performance of the coating for both hydrogen an...

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Published in: Electrochimica Acta
ISSN: 0013-4686
Published: 2019
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URI: https://cronfa.swan.ac.uk/Record/cronfa51519
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first_indexed 2019-08-22T15:32:48Z
last_indexed 2019-09-05T20:44:00Z
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spelling 2019-09-05T15:57:10.5786685 v2 51519 2019-08-22 Raney Nickel 2.0: Development of a high-performance bifunctional electrocatalyst 0c4af8958eda0d2e914a5edc3210cd9e 0000-0003-4052-6931 Charlie Dunnill Charlie Dunnill true false 2019-08-22 CHEG As a catalytic coating for alkaline electrolysis Raney Nickel is one of the most efficient materials discovered, based largely on the activity of nickel and the porosity of the alloy after leaching. This study improves the electrochemical and corrosion performance of the coating for both hydrogen and oxygen evolution in alkaline water-splitting electrolysis through the use during electrodeposition of a sacrificial stainless-steel counter electrode. Analysis using energy dispersive X-ray (EDX) and scanning electron microscopy (SEM) revealed that the although the elemental make-up is largely similar, the morphology is transformed. Through measurements of the electrochemical surface area (ECSA) after long-term intermittent ageing it was found that the surface area was increased by a factor of six. Assessments and comparisons of the electrochemical performance using 3-electrode chronopotentiometry confirm this is one of the most active bifunctional coatings known. Journal Article Electrochimica Acta 134687 0013-4686 Alkaline; Electrolysis; Bifunctional; Raney nickel 31 12 2019 2019-12-31 10.1016/j.electacta.2019.134687 COLLEGE NANME Chemical Engineering COLLEGE CODE CHEG Swansea University 2019-09-05T15:57:10.5786685 2019-08-22T13:35:58.9941534 William J.F. Gannon 1 Charles W. Dunnill 2 Charlie Dunnill 0000-0003-4052-6931 3 0051519-22082019133907.pdf gannon2019(2).pdf 2019-08-22T13:39:07.8370000 Output 3385721 application/pdf Accepted Manuscript true 2020-08-22T00:00:00.0000000 true eng
title Raney Nickel 2.0: Development of a high-performance bifunctional electrocatalyst
spellingShingle Raney Nickel 2.0: Development of a high-performance bifunctional electrocatalyst
Charlie, Dunnill
title_short Raney Nickel 2.0: Development of a high-performance bifunctional electrocatalyst
title_full Raney Nickel 2.0: Development of a high-performance bifunctional electrocatalyst
title_fullStr Raney Nickel 2.0: Development of a high-performance bifunctional electrocatalyst
title_full_unstemmed Raney Nickel 2.0: Development of a high-performance bifunctional electrocatalyst
title_sort Raney Nickel 2.0: Development of a high-performance bifunctional electrocatalyst
author_id_str_mv 0c4af8958eda0d2e914a5edc3210cd9e
author_id_fullname_str_mv 0c4af8958eda0d2e914a5edc3210cd9e_***_Charlie, Dunnill
author Charlie, Dunnill
author2 William J.F. Gannon
Charles W. Dunnill
Charlie Dunnill
format Journal article
container_title Electrochimica Acta
container_start_page 134687
publishDate 2019
institution Swansea University
issn 0013-4686
doi_str_mv 10.1016/j.electacta.2019.134687
document_store_str 1
active_str 0
description As a catalytic coating for alkaline electrolysis Raney Nickel is one of the most efficient materials discovered, based largely on the activity of nickel and the porosity of the alloy after leaching. This study improves the electrochemical and corrosion performance of the coating for both hydrogen and oxygen evolution in alkaline water-splitting electrolysis through the use during electrodeposition of a sacrificial stainless-steel counter electrode. Analysis using energy dispersive X-ray (EDX) and scanning electron microscopy (SEM) revealed that the although the elemental make-up is largely similar, the morphology is transformed. Through measurements of the electrochemical surface area (ECSA) after long-term intermittent ageing it was found that the surface area was increased by a factor of six. Assessments and comparisons of the electrochemical performance using 3-electrode chronopotentiometry confirm this is one of the most active bifunctional coatings known.
published_date 2019-12-31T04:08:57Z
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