Fuel cell catalyst layers containing short-side-chain perfluorosulfonic acid ionomers

Porous catalyst layers (CLs) containing short-side-chain (SSC) perfluorosulfonic acid (PFSA) ionomers of different ion exchange capacity (IEC: 1.3, 1.4 and 1.5 meq g −1) were deposited onto Nafion 211 to form catalyst-coated membranes. The porosity of SSC-PFSA-based CLs is larger than Nafion-CL anal...

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Bibliographic Details
Published in:	Journal of power sources Vol. 196; no. 1; pp. 179 - 181
Main Authors:	Peron, Jennifer, Edwards, Dave, Haldane, Mark, Luo, Xiaoyan, Zhang, Yongming, Holdcroft, Steven, Shi, Zhiqing
Format:	Journal Article
Language:	English
Published:	Amsterdam Elsevier B.V 2011 Elsevier
Subjects:	Applied sciences Catalyst layers Catalysts Chains Deposition Direct energy conversion and energy accumulation Electrical engineering. Electrical power engineering Electrical power engineering Electrochemical conversion: primary and secondary batteries, fuel cells Energy Energy. Thermal use of fuels Equipments for energy generation and conversion: thermal, electrical, mechanical energy, etc Exact sciences and technology Fuel cells Ionomers Low equivalent weight PEM PEMFC Polarization Porosity Relative humidity Short-side-chain PFSA ionomer PEM PEMFC Short-side-chain PFSA ionomer Catalyst layers Fuel cells Low equivalent weight Ionomer Polymer electrolytes Fluorosulfuric acid Polymer solid electrolyte Proton exchange membrane fuel cells Catalyst Fuel cell
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Summary:	Porous catalyst layers (CLs) containing short-side-chain (SSC) perfluorosulfonic acid (PFSA) ionomers of different ion exchange capacity (IEC: 1.3, 1.4 and 1.5 meq g −1) were deposited onto Nafion 211 to form catalyst-coated membranes. The porosity of SSC-PFSA-based CLs is larger than Nafion-CL analogues. CLs incorporating SSC ionomer extend the current density of fuel cell polarization curves at elevated temperature and lower relative humidity compared to those based on long-side chain PFSA (e.g., Nafion)-based CLs. Fuel cell polarization performance was greatly improved at 110 °C and 30% relative humidity (RH) when SSC PFSI was incorporated into the catalyst layer.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	0378-7753 1873-2755
DOI:	10.1016/j.jpowsour.2010.06.050