Comprehensive impedance investigation of low-cost anion exchange membrane electrolysis for large-scale hydrogen production

Abstract Anion exchange membrane (AEM) electrolysis is a promising solution for large-scale hydrogen production from renewable energy resources. However, the performance of AEM electrolysis is still lower than what can be achieved with conventional technologies. The performance of AEM electrolysis i...

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Autores principales:	Immanuel Vincent, Eun-Chong Lee, Hyung-Man Kim
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/6cdc2ae542ee4445b9df72f4dce1595d
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spelling	oai:doaj.org-article:6cdc2ae542ee4445b9df72f4dce1595d2021-12-02T14:01:38ZComprehensive impedance investigation of low-cost anion exchange membrane electrolysis for large-scale hydrogen production10.1038/s41598-020-80683-62045-2322https://doaj.org/article/6cdc2ae542ee4445b9df72f4dce1595d2021-01-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-80683-6https://doaj.org/toc/2045-2322Abstract Anion exchange membrane (AEM) electrolysis is a promising solution for large-scale hydrogen production from renewable energy resources. However, the performance of AEM electrolysis is still lower than what can be achieved with conventional technologies. The performance of AEM electrolysis is limited by integral components of the membrane electrode assembly and the reaction kinetics, which can be measured by ohmic and charge transfer resistances. We here investigate and then quantify the contributions of the ohmic and charge transfer resistances, and the rate-determining steps, involved in AEM electrolysis by using electrochemical impedance spectroscopy analysis. The factors that have an effect on the performance, such as voltage, flow rate, temperature and concentration, were studied at 1.5 and 1.9 V. Increased voltage, flow rate, temperature and concentration of the electrolyte strongly enhanced the anodic activity. We observed that here the anodic reaction offered a greater contribution to the overpotential than the cathode did.Immanuel VincentEun-Chong LeeHyung-Man KimNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-12 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Immanuel Vincent Eun-Chong Lee Hyung-Man Kim Comprehensive impedance investigation of low-cost anion exchange membrane electrolysis for large-scale hydrogen production
description	Abstract Anion exchange membrane (AEM) electrolysis is a promising solution for large-scale hydrogen production from renewable energy resources. However, the performance of AEM electrolysis is still lower than what can be achieved with conventional technologies. The performance of AEM electrolysis is limited by integral components of the membrane electrode assembly and the reaction kinetics, which can be measured by ohmic and charge transfer resistances. We here investigate and then quantify the contributions of the ohmic and charge transfer resistances, and the rate-determining steps, involved in AEM electrolysis by using electrochemical impedance spectroscopy analysis. The factors that have an effect on the performance, such as voltage, flow rate, temperature and concentration, were studied at 1.5 and 1.9 V. Increased voltage, flow rate, temperature and concentration of the electrolyte strongly enhanced the anodic activity. We observed that here the anodic reaction offered a greater contribution to the overpotential than the cathode did.
format	article
author	Immanuel Vincent Eun-Chong Lee Hyung-Man Kim
author_facet	Immanuel Vincent Eun-Chong Lee Hyung-Man Kim
author_sort	Immanuel Vincent
title	Comprehensive impedance investigation of low-cost anion exchange membrane electrolysis for large-scale hydrogen production
title_short	Comprehensive impedance investigation of low-cost anion exchange membrane electrolysis for large-scale hydrogen production
title_full	Comprehensive impedance investigation of low-cost anion exchange membrane electrolysis for large-scale hydrogen production
title_fullStr	Comprehensive impedance investigation of low-cost anion exchange membrane electrolysis for large-scale hydrogen production
title_full_unstemmed	Comprehensive impedance investigation of low-cost anion exchange membrane electrolysis for large-scale hydrogen production
title_sort	comprehensive impedance investigation of low-cost anion exchange membrane electrolysis for large-scale hydrogen production
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/6cdc2ae542ee4445b9df72f4dce1595d
work_keys_str_mv	AT immanuelvincent comprehensiveimpedanceinvestigationoflowcostanionexchangemembraneelectrolysisforlargescalehydrogenproduction AT eunchonglee comprehensiveimpedanceinvestigationoflowcostanionexchangemembraneelectrolysisforlargescalehydrogenproduction AT hyungmankim comprehensiveimpedanceinvestigationoflowcostanionexchangemembraneelectrolysisforlargescalehydrogenproduction
_version_	1718392085948661760

Comprehensive impedance investigation of low-cost anion exchange membrane electrolysis for large-scale hydrogen production

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