RuO2 Nanorods as an Electrocatalyst for Proton Exchange Membrane Water Electrolysis

A custom-built PEM electrolyzer cell was assembled using 6” stainless-steel ConFlat flanges which were fitted with a RuO2 nanorod-decorated, mixed metal oxide (MMO) ribbon mesh anode catalyst. The current density–voltage characteristics were measured for the RuO2<...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Michael W. Cross, Richard P. Smith, Walter J. Varhue
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	electrolyzer electrocatalyst nanorods hydrogen production Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/31658e1f005b4873a9466cccfc3d869e
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:31658e1f005b4873a9466cccfc3d869e
record_format	dspace
spelling	oai:doaj.org-article:31658e1f005b4873a9466cccfc3d869e2021-11-25T18:23:49ZRuO<sub>2</sub> Nanorods as an Electrocatalyst for Proton Exchange Membrane Water Electrolysis10.3390/mi121114122072-666Xhttps://doaj.org/article/31658e1f005b4873a9466cccfc3d869e2021-11-01T00:00:00Zhttps://www.mdpi.com/2072-666X/12/11/1412https://doaj.org/toc/2072-666XA custom-built PEM electrolyzer cell was assembled using 6” stainless-steel ConFlat flanges which were fitted with a RuO<sub>2</sub> nanorod-decorated, mixed metal oxide (MMO) ribbon mesh anode catalyst. The current density–voltage characteristics were measured for the RuO<sub>2</sub> nanorod electrocatalyst while under constant water feed operation. The electrocatalytic behavior was investigated by making a series of physical modifications to the anode catalyst material. These experiments showed an improved activity due to the RuO<sub>2</sub> nanorod electrocatalyst, resulting in a corresponding decrease in the electrochemical overpotential. These overpotentials were identified by collecting experimental data from various electrolyzer cell configurations, resulting in an improved understanding of the enhanced catalytic behavior. The micro-to-nano surface structure of the anode electrocatalyst layer is a critical factor determining the overall operation of the PEM electrolyzer. The improvement was determined to be due to the lowering of the potential barrier to electron escape in an electric field generated in the vicinity of a nanorod.Michael W. CrossRichard P. SmithWalter J. VarhueMDPI AGarticleelectrolyzerelectrocatalystnanorodshydrogen productionMechanical engineering and machineryTJ1-1570ENMicromachines, Vol 12, Iss 1412, p 1412 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	electrolyzer electrocatalyst nanorods hydrogen production Mechanical engineering and machinery TJ1-1570
spellingShingle	electrolyzer electrocatalyst nanorods hydrogen production Mechanical engineering and machinery TJ1-1570 Michael W. Cross Richard P. Smith Walter J. Varhue RuO<sub>2</sub> Nanorods as an Electrocatalyst for Proton Exchange Membrane Water Electrolysis
description	A custom-built PEM electrolyzer cell was assembled using 6” stainless-steel ConFlat flanges which were fitted with a RuO<sub>2</sub> nanorod-decorated, mixed metal oxide (MMO) ribbon mesh anode catalyst. The current density–voltage characteristics were measured for the RuO<sub>2</sub> nanorod electrocatalyst while under constant water feed operation. The electrocatalytic behavior was investigated by making a series of physical modifications to the anode catalyst material. These experiments showed an improved activity due to the RuO<sub>2</sub> nanorod electrocatalyst, resulting in a corresponding decrease in the electrochemical overpotential. These overpotentials were identified by collecting experimental data from various electrolyzer cell configurations, resulting in an improved understanding of the enhanced catalytic behavior. The micro-to-nano surface structure of the anode electrocatalyst layer is a critical factor determining the overall operation of the PEM electrolyzer. The improvement was determined to be due to the lowering of the potential barrier to electron escape in an electric field generated in the vicinity of a nanorod.
format	article
author	Michael W. Cross Richard P. Smith Walter J. Varhue
author_facet	Michael W. Cross Richard P. Smith Walter J. Varhue
author_sort	Michael W. Cross
title	RuO<sub>2</sub> Nanorods as an Electrocatalyst for Proton Exchange Membrane Water Electrolysis
title_short	RuO<sub>2</sub> Nanorods as an Electrocatalyst for Proton Exchange Membrane Water Electrolysis
title_full	RuO<sub>2</sub> Nanorods as an Electrocatalyst for Proton Exchange Membrane Water Electrolysis
title_fullStr	RuO<sub>2</sub> Nanorods as an Electrocatalyst for Proton Exchange Membrane Water Electrolysis
title_full_unstemmed	RuO<sub>2</sub> Nanorods as an Electrocatalyst for Proton Exchange Membrane Water Electrolysis
title_sort	ruo<sub>2</sub> nanorods as an electrocatalyst for proton exchange membrane water electrolysis
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/31658e1f005b4873a9466cccfc3d869e
work_keys_str_mv	AT michaelwcross ruosub2subnanorodsasanelectrocatalystforprotonexchangemembranewaterelectrolysis AT richardpsmith ruosub2subnanorodsasanelectrocatalystforprotonexchangemembranewaterelectrolysis AT walterjvarhue ruosub2subnanorodsasanelectrocatalystforprotonexchangemembranewaterelectrolysis
_version_	1718411186235506688

RuO<sub>2</sub> Nanorods as an Electrocatalyst for Proton Exchange Membrane Water Electrolysis

Ejemplares similares