Exploring the XRF technique as a tool to estimate the degree of leaching in alloy-catalysts used for PEMFCs

Muralidhar Chourashiya, Shuang Ma Andersen

Research output: Contribution to conference without publisher/journalConference abstract for conferenceResearchpeer-review

Abstract

Recent exhibition of polymer electrolyte membrane fuel cell (PEMFC) technology in automotive and renewable energy industries has established itself as an essential technology for the forthcoming ‘hydrogen economy’. Current development in PEMFC technology employs the alloy-catalyst to counter the stability issues of PEMFCs. However, the possibility of leaching-out of one of the constituent elements of the alloy-catalyst during the continuous operation of PEMFCs is undeniable. In this paper we investigate the XRF technique to estimate the degree of leaching of these alloys during the standardized support/catalyst degradation protocols.
XRF technique is simple, direct and can readily provide the relative estimation of elements under investigation. The drop casted alloy-catalyst on glassy carbon (GC) disk of rotating disk electrode (RDE) are characterized by thin-film RDE technique for their oxygen reduction reaction (ORR) activity and support/catalyst-focused accelerated stress test (AST) protocols. The alloy-catalysts were characterized before and after AST protocols using microstructural characterizations and XRF technique to estimate the degree of leaching in alloy-catalysts. The details of the results will be presented during the conference.
Original languageEnglish
Publication date1. Nov 2018
Publication statusPublished - 1. Nov 2018
EventThe general assembly of the Danish Electrochemical Society 2018: generalforsamling for Dansk Elektrokemisk Forening (DEF) 2018 - The Faculty of Engineering, University of Southern Denmark, Odense M, Denmark
Duration: 1. Nov 20182. Nov 2018
http://www.electrochemistry.dk/aktiviteter/kommende/event/21-def2018

Conference

ConferenceThe general assembly of the Danish Electrochemical Society 2018
LocationThe Faculty of Engineering, University of Southern Denmark
Country/TerritoryDenmark
CityOdense M
Period01/11/201802/11/2018
Internet address

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