Cargando…

Few-Layer MoSe(2) Possessing High Catalytic Activity towards Iodide/Tri-iodide Redox Shuttles

Due to the two-dimensional confinement of electrons, single- and few-layer MoSe(2) nanostructures exhibit unusual optical and electrical properties and have found wide applications in catalytic hydrogen evolution reaction, field effect transistor, electrochemical intercalation, and so on. Here we pr...

Descripción completa

Detalles Bibliográficos
Autores principales: Lee, Lawrence Tien Lin, He, Jian, Wang, Baohua, Ma, Yaping, Wong, King Young, Li, Quan, Xiao, Xudong, Chen, Tao
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3924216/
https://www.ncbi.nlm.nih.gov/pubmed/24525919
http://dx.doi.org/10.1038/srep04063
_version_ 1782303716680925184
author Lee, Lawrence Tien Lin
He, Jian
Wang, Baohua
Ma, Yaping
Wong, King Young
Li, Quan
Xiao, Xudong
Chen, Tao
author_facet Lee, Lawrence Tien Lin
He, Jian
Wang, Baohua
Ma, Yaping
Wong, King Young
Li, Quan
Xiao, Xudong
Chen, Tao
author_sort Lee, Lawrence Tien Lin
collection PubMed
description Due to the two-dimensional confinement of electrons, single- and few-layer MoSe(2) nanostructures exhibit unusual optical and electrical properties and have found wide applications in catalytic hydrogen evolution reaction, field effect transistor, electrochemical intercalation, and so on. Here we present a new application in dye-sensitized solar cell as catalyst for the reduction of I(3)(−) to I(−) at the counter electrode. The few-layer MoSe(2) is fabricated by surface selenization of Mo-coated soda-lime glass. Our results show that the few-layer MoSe(2) displays high catalytic efficiency for the regeneration of I(−) species, which in turn yields a photovoltaic energy conversion efficiency of 9.00%, while the identical photoanode coupling with “champion” electrode based on Pt nanoparticles on FTO glass generates efficiency only 8.68%. Thus, a Pt- and FTO-free counter electrode outperforming the best conventional combination is obtained. In this electrode, Mo film is found to significantly decrease the sheet resistance of the counter electrode, contributing to the excellent device performance. Since all of the elements in the electrode are of high abundance ratios, this type of electrode is promising for the fabrication of large area devices at low materials cost.
format Online
Article
Text
id pubmed-3924216
institution National Center for Biotechnology Information
language English
publishDate 2014
publisher Nature Publishing Group
record_format MEDLINE/PubMed
spelling pubmed-39242162014-02-14 Few-Layer MoSe(2) Possessing High Catalytic Activity towards Iodide/Tri-iodide Redox Shuttles Lee, Lawrence Tien Lin He, Jian Wang, Baohua Ma, Yaping Wong, King Young Li, Quan Xiao, Xudong Chen, Tao Sci Rep Article Due to the two-dimensional confinement of electrons, single- and few-layer MoSe(2) nanostructures exhibit unusual optical and electrical properties and have found wide applications in catalytic hydrogen evolution reaction, field effect transistor, electrochemical intercalation, and so on. Here we present a new application in dye-sensitized solar cell as catalyst for the reduction of I(3)(−) to I(−) at the counter electrode. The few-layer MoSe(2) is fabricated by surface selenization of Mo-coated soda-lime glass. Our results show that the few-layer MoSe(2) displays high catalytic efficiency for the regeneration of I(−) species, which in turn yields a photovoltaic energy conversion efficiency of 9.00%, while the identical photoanode coupling with “champion” electrode based on Pt nanoparticles on FTO glass generates efficiency only 8.68%. Thus, a Pt- and FTO-free counter electrode outperforming the best conventional combination is obtained. In this electrode, Mo film is found to significantly decrease the sheet resistance of the counter electrode, contributing to the excellent device performance. Since all of the elements in the electrode are of high abundance ratios, this type of electrode is promising for the fabrication of large area devices at low materials cost. Nature Publishing Group 2014-02-14 /pmc/articles/PMC3924216/ /pubmed/24525919 http://dx.doi.org/10.1038/srep04063 Text en Copyright © 2014, Macmillan Publishers Limited. All rights reserved http://creativecommons.org/licenses/by-nc-sa/3.0/ This work is licensed under a Creative Commons Attribution-NonCommercial-ShareALike 3.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/3.0/
spellingShingle Article
Lee, Lawrence Tien Lin
He, Jian
Wang, Baohua
Ma, Yaping
Wong, King Young
Li, Quan
Xiao, Xudong
Chen, Tao
Few-Layer MoSe(2) Possessing High Catalytic Activity towards Iodide/Tri-iodide Redox Shuttles
title Few-Layer MoSe(2) Possessing High Catalytic Activity towards Iodide/Tri-iodide Redox Shuttles
title_full Few-Layer MoSe(2) Possessing High Catalytic Activity towards Iodide/Tri-iodide Redox Shuttles
title_fullStr Few-Layer MoSe(2) Possessing High Catalytic Activity towards Iodide/Tri-iodide Redox Shuttles
title_full_unstemmed Few-Layer MoSe(2) Possessing High Catalytic Activity towards Iodide/Tri-iodide Redox Shuttles
title_short Few-Layer MoSe(2) Possessing High Catalytic Activity towards Iodide/Tri-iodide Redox Shuttles
title_sort few-layer mose(2) possessing high catalytic activity towards iodide/tri-iodide redox shuttles
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3924216/
https://www.ncbi.nlm.nih.gov/pubmed/24525919
http://dx.doi.org/10.1038/srep04063
work_keys_str_mv AT leelawrencetienlin fewlayermose2possessinghighcatalyticactivitytowardsiodidetriiodideredoxshuttles
AT hejian fewlayermose2possessinghighcatalyticactivitytowardsiodidetriiodideredoxshuttles
AT wangbaohua fewlayermose2possessinghighcatalyticactivitytowardsiodidetriiodideredoxshuttles
AT mayaping fewlayermose2possessinghighcatalyticactivitytowardsiodidetriiodideredoxshuttles
AT wongkingyoung fewlayermose2possessinghighcatalyticactivitytowardsiodidetriiodideredoxshuttles
AT liquan fewlayermose2possessinghighcatalyticactivitytowardsiodidetriiodideredoxshuttles
AT xiaoxudong fewlayermose2possessinghighcatalyticactivitytowardsiodidetriiodideredoxshuttles
AT chentao fewlayermose2possessinghighcatalyticactivitytowardsiodidetriiodideredoxshuttles