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Electrocatalytic Behavior of PtCu Clusters Produced by Nanoparticle Beam Deposition

Maria Chiara Spadaro, Jo J. L. Humphrey, Rongsheng Cai Orcid Logo, Lidia Martínez, Sarah J. Haigh, Yves Huttel, Steve J. Spencer, Andrew J. Wain, Richard Palmer Orcid Logo

The Journal of Physical Chemistry C, Volume: 124, Issue: 43, Pages: 23683 - 23689

Swansea University Authors: Maria Chiara Spadaro, Rongsheng Cai Orcid Logo, Richard Palmer Orcid Logo

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DOI (Published version): 10.1021/acs.jpcc.0c06744

Abstract

State-of-the-art electrocatalysts for electrolyzer and fuel cell applications currently rely on platinum group metals, which are costly and subject to supply risks. In recent years, a vast collection of research has explored the possibility of reducing the Pt content in such catalysts by alloying wi...

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Published in: The Journal of Physical Chemistry C
ISSN: 1932-7447 1932-7455
Published: American Chemical Society (ACS) 2020
Online Access: Check full text

URI: https://cronfa.swan.ac.uk/Record/cronfa55422
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In recent years, a vast collection of research has explored the possibility of reducing the Pt content in such catalysts by alloying with earth-abundant and cheap metals, enabling co-optimization of cost and activity. Here, using nanoparticle beam deposition, we explore the electrocatalytic performance of PtCu alloy clusters in the hydrogen evolution reaction (HER). Elemental compositions of the produced bimetallic clusters were shown by X-ray photoelectron spectroscopy (XPS) to range from 2 at. % to 38 at. % Pt, while high-angle annular dark field scanning transmission electron microscopy (HAADF-STEM) combined with energy dispersive X-ray (EDX) spectroscopy indicated that the predominant cluster morphologies could be characterized as either a fully mixed alloy or as a mixed core with a Cu-rich shell. In contrast with previous studies, a monotonic decrease in HER activity with increasing Cu content was observed over the composition range studied, with the current density measured at -0.3 V (vs reversible hydrogen electrode) scaling approximately linearly with Pt at. %. This trend opens up the possibility that PtCu could be used as a reference system for comparing the composition-dependent activity of other bimetallic catalysts.</abstract><type>Journal Article</type><journal>The Journal of Physical Chemistry C</journal><volume>124</volume><journalNumber>43</journalNumber><paginationStart>23683</paginationStart><paginationEnd>23689</paginationEnd><publisher>American Chemical Society (ACS)</publisher><placeOfPublication/><isbnPrint/><isbnElectronic/><issnPrint>1932-7447</issnPrint><issnElectronic>1932-7455</issnElectronic><keywords/><publishedDay>29</publishedDay><publishedMonth>10</publishedMonth><publishedYear>2020</publishedYear><publishedDate>2020-10-29</publishedDate><doi>10.1021/acs.jpcc.0c06744</doi><url/><notes/><college>COLLEGE NANME</college><CollegeCode>COLLEGE CODE</CollegeCode><institution>Swansea University</institution><apcterm/><funders>UKRI, EP/K006061/2</funders><lastEdited>2020-11-10T17:09:56.8535959</lastEdited><Created>2020-10-15T12:03:06.4083952</Created><path><level id="1">Faculty of Science and Engineering</level><level id="2">School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Mechanical Engineering</level></path><authors><author><firstname>Maria Chiara</firstname><surname>Spadaro</surname><order>1</order></author><author><firstname>Jo J. 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spelling 2020-11-10T17:09:56.8535959 v2 55422 2020-10-15 Electrocatalytic Behavior of PtCu Clusters Produced by Nanoparticle Beam Deposition 8733e40ba2bb203e97f99354be3348a5 Maria Chiara Spadaro Maria Chiara Spadaro true false c2d38332a07bde5ce1ce66d8750f652e 0000-0002-2148-0563 Rongsheng Cai Rongsheng Cai true false 6ae369618efc7424d9774377536ea519 0000-0001-8728-8083 Richard Palmer Richard Palmer true false 2020-10-15 State-of-the-art electrocatalysts for electrolyzer and fuel cell applications currently rely on platinum group metals, which are costly and subject to supply risks. In recent years, a vast collection of research has explored the possibility of reducing the Pt content in such catalysts by alloying with earth-abundant and cheap metals, enabling co-optimization of cost and activity. Here, using nanoparticle beam deposition, we explore the electrocatalytic performance of PtCu alloy clusters in the hydrogen evolution reaction (HER). Elemental compositions of the produced bimetallic clusters were shown by X-ray photoelectron spectroscopy (XPS) to range from 2 at. % to 38 at. % Pt, while high-angle annular dark field scanning transmission electron microscopy (HAADF-STEM) combined with energy dispersive X-ray (EDX) spectroscopy indicated that the predominant cluster morphologies could be characterized as either a fully mixed alloy or as a mixed core with a Cu-rich shell. In contrast with previous studies, a monotonic decrease in HER activity with increasing Cu content was observed over the composition range studied, with the current density measured at -0.3 V (vs reversible hydrogen electrode) scaling approximately linearly with Pt at. %. This trend opens up the possibility that PtCu could be used as a reference system for comparing the composition-dependent activity of other bimetallic catalysts. Journal Article The Journal of Physical Chemistry C 124 43 23683 23689 American Chemical Society (ACS) 1932-7447 1932-7455 29 10 2020 2020-10-29 10.1021/acs.jpcc.0c06744 COLLEGE NANME COLLEGE CODE Swansea University UKRI, EP/K006061/2 2020-11-10T17:09:56.8535959 2020-10-15T12:03:06.4083952 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Mechanical Engineering Maria Chiara Spadaro 1 Jo J. L. Humphrey 2 Rongsheng Cai 0000-0002-2148-0563 3 Lidia Martínez 4 Sarah J. Haigh 5 Yves Huttel 6 Steve J. Spencer 7 Andrew J. Wain 8 Richard Palmer 0000-0001-8728-8083 9 55422__18502__b5b171e6f827461795499f932ad8f452.pdf 55422.VOR.pdf 2020-10-26T19:20:47.7040241 Output 2575129 application/pdf Version of Record true Distributed under the terms of a Creative Commons Attribution 4.0 (CC-BY) License. true eng https://creativecommons.org/licenses/by/4.0/
title Electrocatalytic Behavior of PtCu Clusters Produced by Nanoparticle Beam Deposition
spellingShingle Electrocatalytic Behavior of PtCu Clusters Produced by Nanoparticle Beam Deposition
Maria Chiara Spadaro
Rongsheng Cai
Richard Palmer
title_short Electrocatalytic Behavior of PtCu Clusters Produced by Nanoparticle Beam Deposition
title_full Electrocatalytic Behavior of PtCu Clusters Produced by Nanoparticle Beam Deposition
title_fullStr Electrocatalytic Behavior of PtCu Clusters Produced by Nanoparticle Beam Deposition
title_full_unstemmed Electrocatalytic Behavior of PtCu Clusters Produced by Nanoparticle Beam Deposition
title_sort Electrocatalytic Behavior of PtCu Clusters Produced by Nanoparticle Beam Deposition
author_id_str_mv 8733e40ba2bb203e97f99354be3348a5
c2d38332a07bde5ce1ce66d8750f652e
6ae369618efc7424d9774377536ea519
author_id_fullname_str_mv 8733e40ba2bb203e97f99354be3348a5_***_Maria Chiara Spadaro
c2d38332a07bde5ce1ce66d8750f652e_***_Rongsheng Cai
6ae369618efc7424d9774377536ea519_***_Richard Palmer
author Maria Chiara Spadaro
Rongsheng Cai
Richard Palmer
author2 Maria Chiara Spadaro
Jo J. L. Humphrey
Rongsheng Cai
Lidia Martínez
Sarah J. Haigh
Yves Huttel
Steve J. Spencer
Andrew J. Wain
Richard Palmer
format Journal article
container_title The Journal of Physical Chemistry C
container_volume 124
container_issue 43
container_start_page 23683
publishDate 2020
institution Swansea University
issn 1932-7447
1932-7455
doi_str_mv 10.1021/acs.jpcc.0c06744
publisher American Chemical Society (ACS)
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 Aerospace, Civil, Electrical, General and Mechanical Engineering - Mechanical Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Mechanical Engineering
document_store_str 1
active_str 0
description State-of-the-art electrocatalysts for electrolyzer and fuel cell applications currently rely on platinum group metals, which are costly and subject to supply risks. In recent years, a vast collection of research has explored the possibility of reducing the Pt content in such catalysts by alloying with earth-abundant and cheap metals, enabling co-optimization of cost and activity. Here, using nanoparticle beam deposition, we explore the electrocatalytic performance of PtCu alloy clusters in the hydrogen evolution reaction (HER). Elemental compositions of the produced bimetallic clusters were shown by X-ray photoelectron spectroscopy (XPS) to range from 2 at. % to 38 at. % Pt, while high-angle annular dark field scanning transmission electron microscopy (HAADF-STEM) combined with energy dispersive X-ray (EDX) spectroscopy indicated that the predominant cluster morphologies could be characterized as either a fully mixed alloy or as a mixed core with a Cu-rich shell. In contrast with previous studies, a monotonic decrease in HER activity with increasing Cu content was observed over the composition range studied, with the current density measured at -0.3 V (vs reversible hydrogen electrode) scaling approximately linearly with Pt at. %. This trend opens up the possibility that PtCu could be used as a reference system for comparing the composition-dependent activity of other bimetallic catalysts.
published_date 2020-10-29T20:09:46Z
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score 11.048302

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