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Three-dimensional graphene networks and RGO-based counter electrode for DSSCs

Graphene is considered to be a potential replacement for the traditional Pt counter electrode (CE) in dye-sensitized solar cells (DSSCs). Besides a high electron transport ability, a close contact between the CE and electrolyte is crucial to its outstanding catalytic activity for the I(3)(−)/I redox...

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Autores principales: Tang, Bo, Yu, Haogang, Huang, Weiqiu, Sun, Yunfei, Li, Xufei, Li, Sen, Ma, Tingting
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9064301/
https://www.ncbi.nlm.nih.gov/pubmed/35521385
http://dx.doi.org/10.1039/c9ra02792k
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author Tang, Bo
Yu, Haogang
Huang, Weiqiu
Sun, Yunfei
Li, Xufei
Li, Sen
Ma, Tingting
author_facet Tang, Bo
Yu, Haogang
Huang, Weiqiu
Sun, Yunfei
Li, Xufei
Li, Sen
Ma, Tingting
author_sort Tang, Bo
collection PubMed
description Graphene is considered to be a potential replacement for the traditional Pt counter electrode (CE) in dye-sensitized solar cells (DSSCs). Besides a high electron transport ability, a close contact between the CE and electrolyte is crucial to its outstanding catalytic activity for the I(3)(−)/I redox reaction. In this study, reduced graphene oxide (RGO) and three-dimensional graphene networks (3DGNs) were used to fabricate the CE, and the graphene-based CE endowed the resulting DSSC with excellent photovoltaic performance features. The high quality and continuous structure of the 3DGNs provided a channel amenable to fast transport of electrons, while the RGO afforded a close contact at the interface between the graphene basal plane and electrolyte. The obtained energy conversion efficiency (η) was closely related to the mass fraction and reduction degree of the RGO that was used. Corresponding optimization yielded, for the DSSCs based on the 3DGN–RGO CE, a value of η as high as 9.79%, comparable to that of the device using a Pt CE and hence implying promising prospects for the as-prepared CE.
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spelling pubmed-90643012022-05-04 Three-dimensional graphene networks and RGO-based counter electrode for DSSCs Tang, Bo Yu, Haogang Huang, Weiqiu Sun, Yunfei Li, Xufei Li, Sen Ma, Tingting RSC Adv Chemistry Graphene is considered to be a potential replacement for the traditional Pt counter electrode (CE) in dye-sensitized solar cells (DSSCs). Besides a high electron transport ability, a close contact between the CE and electrolyte is crucial to its outstanding catalytic activity for the I(3)(−)/I redox reaction. In this study, reduced graphene oxide (RGO) and three-dimensional graphene networks (3DGNs) were used to fabricate the CE, and the graphene-based CE endowed the resulting DSSC with excellent photovoltaic performance features. The high quality and continuous structure of the 3DGNs provided a channel amenable to fast transport of electrons, while the RGO afforded a close contact at the interface between the graphene basal plane and electrolyte. The obtained energy conversion efficiency (η) was closely related to the mass fraction and reduction degree of the RGO that was used. Corresponding optimization yielded, for the DSSCs based on the 3DGN–RGO CE, a value of η as high as 9.79%, comparable to that of the device using a Pt CE and hence implying promising prospects for the as-prepared CE. The Royal Society of Chemistry 2019-05-20 /pmc/articles/PMC9064301/ /pubmed/35521385 http://dx.doi.org/10.1039/c9ra02792k Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Tang, Bo
Yu, Haogang
Huang, Weiqiu
Sun, Yunfei
Li, Xufei
Li, Sen
Ma, Tingting
Three-dimensional graphene networks and RGO-based counter electrode for DSSCs
title Three-dimensional graphene networks and RGO-based counter electrode for DSSCs
title_full Three-dimensional graphene networks and RGO-based counter electrode for DSSCs
title_fullStr Three-dimensional graphene networks and RGO-based counter electrode for DSSCs
title_full_unstemmed Three-dimensional graphene networks and RGO-based counter electrode for DSSCs
title_short Three-dimensional graphene networks and RGO-based counter electrode for DSSCs
title_sort three-dimensional graphene networks and rgo-based counter electrode for dsscs
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9064301/
https://www.ncbi.nlm.nih.gov/pubmed/35521385
http://dx.doi.org/10.1039/c9ra02792k
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