Design and Demonstration of Large Scale Cu<sub>2</sub>O Photocathodes with Metal Grid Structure for Photoelectrochemical Water Splitting

Upscaling of photoelectrode for a practical photoelectrochemical (PEC) water splitting system is still challenging because the PEC performance of large-scale photoelectrode is significantly low, compared to the lab scale photoelectrode. In an effort to overcome this challenge, sputtered gold (Au) an...

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Autor principal:	Min-Kyu Son
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	photoelectrochemical water splitting photocathode cuprous oxide upscaling metal grid Technology T
Acceso en línea:	https://doaj.org/article/c9dadb4b8b78437aa70089e227800b39
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spelling	oai:doaj.org-article:c9dadb4b8b78437aa70089e227800b392021-11-11T16:08:05ZDesign and Demonstration of Large Scale Cu<sub>2</sub>O Photocathodes with Metal Grid Structure for Photoelectrochemical Water Splitting10.3390/en142174221996-1073https://doaj.org/article/c9dadb4b8b78437aa70089e227800b392021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1073/14/21/7422https://doaj.org/toc/1996-1073Upscaling of photoelectrode for a practical photoelectrochemical (PEC) water splitting system is still challenging because the PEC performance of large-scale photoelectrode is significantly low, compared to the lab scale photoelectrode. In an effort to overcome this challenge, sputtered gold (Au) and copper (Cu) grid lines were introduced to improve the PEC performance of large-scale cuprous oxide (Cu<sub>2</sub>O) photocathode in this work. It was demonstrated that Cu grid lines are more effective than Au grid lines to improve the PEC performance of large-scale Cu<sub>2</sub>O photocathode because its intrinsic conductivity and quality of grid lines are better than ones containing Au grid lines. As a result, the PEC performance of a 25-cm<sup>2</sup> scaled Cu<sub>2</sub>O photocathode with Cu grid lines was almost double than one without grid lines, resulting in an improved charge transport in the large area substrate by Cu grid lines. Finally, a 50-cm<sup>2</sup> scaled Cu<sub>2</sub>O photocathode with Cu grid lines was tested in an outdoor condition under natural sun. This is the first outdoor PEC demonstration of large-scale Cu<sub>2</sub>O photocathode with Cu grid lines, which gives insight into the development of efficient upscaled PEC photoelectrode.Min-Kyu SonMDPI AGarticlephotoelectrochemical water splittingphotocathodecuprous oxideupscalingmetal gridTechnologyTENEnergies, Vol 14, Iss 7422, p 7422 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	photoelectrochemical water splitting photocathode cuprous oxide upscaling metal grid Technology T
spellingShingle	photoelectrochemical water splitting photocathode cuprous oxide upscaling metal grid Technology T Min-Kyu Son Design and Demonstration of Large Scale Cu<sub>2</sub>O Photocathodes with Metal Grid Structure for Photoelectrochemical Water Splitting
description	Upscaling of photoelectrode for a practical photoelectrochemical (PEC) water splitting system is still challenging because the PEC performance of large-scale photoelectrode is significantly low, compared to the lab scale photoelectrode. In an effort to overcome this challenge, sputtered gold (Au) and copper (Cu) grid lines were introduced to improve the PEC performance of large-scale cuprous oxide (Cu<sub>2</sub>O) photocathode in this work. It was demonstrated that Cu grid lines are more effective than Au grid lines to improve the PEC performance of large-scale Cu<sub>2</sub>O photocathode because its intrinsic conductivity and quality of grid lines are better than ones containing Au grid lines. As a result, the PEC performance of a 25-cm<sup>2</sup> scaled Cu<sub>2</sub>O photocathode with Cu grid lines was almost double than one without grid lines, resulting in an improved charge transport in the large area substrate by Cu grid lines. Finally, a 50-cm<sup>2</sup> scaled Cu<sub>2</sub>O photocathode with Cu grid lines was tested in an outdoor condition under natural sun. This is the first outdoor PEC demonstration of large-scale Cu<sub>2</sub>O photocathode with Cu grid lines, which gives insight into the development of efficient upscaled PEC photoelectrode.
format	article
author	Min-Kyu Son
author_facet	Min-Kyu Son
author_sort	Min-Kyu Son
title	Design and Demonstration of Large Scale Cu<sub>2</sub>O Photocathodes with Metal Grid Structure for Photoelectrochemical Water Splitting
title_short	Design and Demonstration of Large Scale Cu<sub>2</sub>O Photocathodes with Metal Grid Structure for Photoelectrochemical Water Splitting
title_full	Design and Demonstration of Large Scale Cu<sub>2</sub>O Photocathodes with Metal Grid Structure for Photoelectrochemical Water Splitting
title_fullStr	Design and Demonstration of Large Scale Cu<sub>2</sub>O Photocathodes with Metal Grid Structure for Photoelectrochemical Water Splitting
title_full_unstemmed	Design and Demonstration of Large Scale Cu<sub>2</sub>O Photocathodes with Metal Grid Structure for Photoelectrochemical Water Splitting
title_sort	design and demonstration of large scale cu<sub>2</sub>o photocathodes with metal grid structure for photoelectrochemical water splitting
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/c9dadb4b8b78437aa70089e227800b39
work_keys_str_mv	AT minkyuson designanddemonstrationoflargescalecusub2subophotocathodeswithmetalgridstructureforphotoelectrochemicalwatersplitting
_version_	1718432439549820928

Design and Demonstration of Large Scale Cu<sub>2</sub>O Photocathodes with Metal Grid Structure for Photoelectrochemical Water Splitting

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