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Enhancement of high temperature PEMFC stability using catalysts based on Pt supported on SiC based materials

Paper ID Volume ID Publish Year Pages File Format Full-Text
44759 46344 2016 9 PDF Available
Title
Enhancement of high temperature PEMFC stability using catalysts based on Pt supported on SiC based materials
Abstract

•Pt has been successfully deposited on new SiC based supports.•The SiC based supports showed a higher electrochemical stability.•The Pt/SiC needs higher activation times when the cell operates with air.•First single cell results at 160 °C of new catalyst based on SiC materials.•The Pt/SiCTiC catalyst showed a very high stability in single cell at 160 °C.

With the aim of overcome the carbon supports of high temperature Proton Exchange Membrane Fuel cells (HT-PEMFC) electrodes, two novel non-carbonaceous support based on SiC have been assessed, SiC and SiCTiC. 40% wt. Pt was successfully deposited on them and they were physicochemical and electrochemically characterized. Both catalysts on SiC based materials showed a very high electrochemical stability in the half cell experiments in comparison with Pt on carbon support, showing a lower degradation rate of the electrochemical surface area (ECSA). Membrane Electrode Assemblies (MEAs) were prepared with the different catalysts and tested in a single cell (25 cm2) operated at 160 °C. The Pt/SiCTiC showed a good performance and the highest stability in the fuel cell tests carried under the same operation conditions.

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Keywords
Platinum; HT-PEMFC; Catalyst support; Carbides; Durability
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Enhancement of high temperature PEMFC stability using catalysts based on Pt supported on SiC based materials
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 198, 5 December 2016, Pages 516–524
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
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