Investigating the performance of catalyst layer micro-structures with different platinum loadings

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In this study a four-phase micro-structure of a PEFC catalyst layer was reconstructed by randomly placing overlapping spheres for each solid catalyst phase. The micro-structure was mirrored to make a micro-structure. A body-fit computational mesh was produced for the reconstructed micro-structure in OpenFOAM. Associated conservation equations were solved within all the phases with electrochemical reaction as the boundary condition at the interface between ionomer and platinum phases. The study is focused on the platinum loading of CL. The polarization curves of the micro-structure performance have been compared for different platinum loadings. This paper gives increased insight into the relatively greater ... continued below

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765 - 772

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Khakaz-Baboli, Moben; Harvey, David & Pharoah, Jon July 1, 2012.

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In this study a four-phase micro-structure of a PEFC catalyst layer was reconstructed by randomly placing overlapping spheres for each solid catalyst phase. The micro-structure was mirrored to make a micro-structure. A body-fit computational mesh was produced for the reconstructed micro-structure in OpenFOAM. Associated conservation equations were solved within all the phases with electrochemical reaction as the boundary condition at the interface between ionomer and platinum phases. The study is focused on the platinum loading of CL. The polarization curves of the micro-structure performance have been compared for different platinum loadings. This paper gives increased insight into the relatively greater losses at decreased platinum loadings.

Physical Description

765 - 772

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  • Journal Name: ECS Transactions; Journal Volume: 50; Journal Issue: 2; Conference: 222nd ECS Meeting, Honolulu, Hawai’I, October 7 -12, 2012

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  • Report No.: DOE/E0000466-12
  • Grant Number: EE0000466
  • DOI: 10.1149/05002.0765ecst | External Link
  • Office of Scientific & Technical Information Report Number: 1084697
  • Archival Resource Key: ark:/67531/metadc841799

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  • July 1, 2012

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  • May 19, 2016, 9:45 a.m.

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  • July 22, 2016, 4:23 p.m.

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Khakaz-Baboli, Moben; Harvey, David & Pharoah, Jon. Investigating the performance of catalyst layer micro-structures with different platinum loadings, article, July 1, 2012; United States. (digital.library.unt.edu/ark:/67531/metadc841799/: accessed October 20, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.