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Impedance Characteristics of Transparent GNP-Pt Ink Catalysts for Flexible Dye Sensitized Solar Cells

J. Baker, J. D. McGettrick, D. T. Gethin, T. M. Watson, David Gethin Orcid Logo, Trystan Watson Orcid Logo, James McGettrick Orcid Logo, Jenny Baker Orcid Logo

Journal of the Electrochemical Society, Volume: 162, Issue: 8, Pages: H564 - H569

Swansea University Authors: David Gethin Orcid Logo, Trystan Watson Orcid Logo, James McGettrick Orcid Logo, Jenny Baker Orcid Logo

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DOI (Published version): 10.1149/2.0961508jes

Abstract

By thermally reducing platinum onto the surface of Graphene Nanoplatelet (GNP) particles the catalytic activity of the iodide/triiodide reaction in dye-sensitized solar cells (DSC) can be improved significantly. The GNP-Pt particles can be used to formulate a highly catalytic yet transparent ink, wh...

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Published in: Journal of the Electrochemical Society
ISSN: 0013-4651
Published: 2015
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URI: https://cronfa.swan.ac.uk/Record/cronfa22358
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spelling 2018-01-19T18:44:19.5016501 v2 22358 2015-07-16 Impedance Characteristics of Transparent GNP-Pt Ink Catalysts for Flexible Dye Sensitized Solar Cells 20b93675a5457203ae87ebc32bd6d155 0000-0002-7142-8253 David Gethin David Gethin true false a210327b52472cfe8df9b8108d661457 0000-0002-8015-1436 Trystan Watson Trystan Watson true false bdbacc591e2de05180e0fd3cc13fa480 0000-0002-7719-2958 James McGettrick James McGettrick true false 6913b56f36f0c8cd34d8c9040d2df460 0000-0003-3530-1957 Jenny Baker Jenny Baker true false 2015-07-16 MECH By thermally reducing platinum onto the surface of Graphene Nanoplatelet (GNP) particles the catalytic activity of the iodide/triiodide reaction in dye-sensitized solar cells (DSC) can be improved significantly. The GNP-Pt particles can be used to formulate a highly catalytic yet transparent ink, which can be deposited by a number of different technologies such as flexographic printing, K-bar, slot-die and spin coating. The catalytic performance of the ink has been characterized using impedance spectroscopy, the impedance spectra show a high frequency impedance curve often seen in carbon electrodes. The origin of this impedance has a number of opposing hypotheses which are critically examined. The data supports the hypothesis that the high frequency curve is due to a contact resistance between the GNP-Pt ink and the FTO. In addition to the high frequency curve, a previously unresolved low frequency impedance is identified. When fabricated into DSCs the ink catalyst demonstrates cell efficiencies up to 5.2% and is shown to have a similar performance to conventional sputtered platinum when used in a reverse illuminated DSC (through the counter electrode). The first flexible reverse illuminated DSC with a GNP-Pt ink catalyst, suitable for roll-to-roll deposition is reported with an efficiency of 2.6%. Journal Article Journal of the Electrochemical Society 162 8 H564 H569 0013-4651 catalyst, dye-sensitized, flexible, graphene, impedence, ink, platinum 31 12 2015 2015-12-31 10.1149/2.0961508jes COLLEGE NANME Mechanical Engineering COLLEGE CODE MECH Swansea University 2018-01-19T18:44:19.5016501 2015-07-16T13:08:47.2407987 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Mechanical Engineering J. Baker 1 J. D. McGettrick 2 D. T. Gethin 3 T. M. Watson 4 David Gethin 0000-0002-7142-8253 5 Trystan Watson 0000-0002-8015-1436 6 James McGettrick 0000-0002-7719-2958 7 Jenny Baker 0000-0003-3530-1957 8
title Impedance Characteristics of Transparent GNP-Pt Ink Catalysts for Flexible Dye Sensitized Solar Cells
spellingShingle Impedance Characteristics of Transparent GNP-Pt Ink Catalysts for Flexible Dye Sensitized Solar Cells
David Gethin
Trystan Watson
James McGettrick
Jenny Baker
title_short Impedance Characteristics of Transparent GNP-Pt Ink Catalysts for Flexible Dye Sensitized Solar Cells
title_full Impedance Characteristics of Transparent GNP-Pt Ink Catalysts for Flexible Dye Sensitized Solar Cells
title_fullStr Impedance Characteristics of Transparent GNP-Pt Ink Catalysts for Flexible Dye Sensitized Solar Cells
title_full_unstemmed Impedance Characteristics of Transparent GNP-Pt Ink Catalysts for Flexible Dye Sensitized Solar Cells
title_sort Impedance Characteristics of Transparent GNP-Pt Ink Catalysts for Flexible Dye Sensitized Solar Cells
author_id_str_mv 20b93675a5457203ae87ebc32bd6d155
a210327b52472cfe8df9b8108d661457
bdbacc591e2de05180e0fd3cc13fa480
6913b56f36f0c8cd34d8c9040d2df460
author_id_fullname_str_mv 20b93675a5457203ae87ebc32bd6d155_***_David Gethin
a210327b52472cfe8df9b8108d661457_***_Trystan Watson
bdbacc591e2de05180e0fd3cc13fa480_***_James McGettrick
6913b56f36f0c8cd34d8c9040d2df460_***_Jenny Baker
author David Gethin
Trystan Watson
James McGettrick
Jenny Baker
author2 J. Baker
J. D. McGettrick
D. T. Gethin
T. M. Watson
David Gethin
Trystan Watson
James McGettrick
Jenny Baker
format Journal article
container_title Journal of the Electrochemical Society
container_volume 162
container_issue 8
container_start_page H564
publishDate 2015
institution Swansea University
issn 0013-4651
doi_str_mv 10.1149/2.0961508jes
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 0
active_str 0
description By thermally reducing platinum onto the surface of Graphene Nanoplatelet (GNP) particles the catalytic activity of the iodide/triiodide reaction in dye-sensitized solar cells (DSC) can be improved significantly. The GNP-Pt particles can be used to formulate a highly catalytic yet transparent ink, which can be deposited by a number of different technologies such as flexographic printing, K-bar, slot-die and spin coating. The catalytic performance of the ink has been characterized using impedance spectroscopy, the impedance spectra show a high frequency impedance curve often seen in carbon electrodes. The origin of this impedance has a number of opposing hypotheses which are critically examined. The data supports the hypothesis that the high frequency curve is due to a contact resistance between the GNP-Pt ink and the FTO. In addition to the high frequency curve, a previously unresolved low frequency impedance is identified. When fabricated into DSCs the ink catalyst demonstrates cell efficiencies up to 5.2% and is shown to have a similar performance to conventional sputtered platinum when used in a reverse illuminated DSC (through the counter electrode). The first flexible reverse illuminated DSC with a GNP-Pt ink catalyst, suitable for roll-to-roll deposition is reported with an efficiency of 2.6%.
published_date 2015-12-31T03:26:37Z
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score 11.017797

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