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Date of download: 6/3/2016 Copyright © ASME. All rights reserved. From: Intermediate Temperature Fuel Cell and Oxygen Reduction Studies With Carbon-Supported.

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Presentation on theme: "Date of download: 6/3/2016 Copyright © ASME. All rights reserved. From: Intermediate Temperature Fuel Cell and Oxygen Reduction Studies With Carbon-Supported."— Presentation transcript:

1 Date of download: 6/3/2016 Copyright © ASME. All rights reserved. From: Intermediate Temperature Fuel Cell and Oxygen Reduction Studies With Carbon-Supported Platinum Alloy Catalysts in Phosphoric Acid Based Systems J. Fuel Cell Sci. Technol. 2011;9(1):011002-011002-9. doi:10.1115/1.4004461 Schemetic of the polybenzimidazole synthesis reaction used Figure Legend:

2 Date of download: 6/3/2016 Copyright © ASME. All rights reserved. From: Intermediate Temperature Fuel Cell and Oxygen Reduction Studies With Carbon-Supported Platinum Alloy Catalysts in Phosphoric Acid Based Systems J. Fuel Cell Sci. Technol. 2011;9(1):011002-011002-9. doi:10.1115/1.4004461 (a) The applied potential profiles with double potential steps for chronoamperometry measurements, and (b) typical current responses, which were measured with commercial PtCo catalysts at 150°C. The experimental current data after 10 s were fitted with an exponential decay function to obtain oxygen reduction currents at each potential. Figure Legend:

3 Date of download: 6/3/2016 Copyright © ASME. All rights reserved. From: Intermediate Temperature Fuel Cell and Oxygen Reduction Studies With Carbon-Supported Platinum Alloy Catalysts in Phosphoric Acid Based Systems J. Fuel Cell Sci. Technol. 2011;9(1):011002-011002-9. doi:10.1115/1.4004461 XRD spectra of commercial Pt and Pt alloy catalysts Figure Legend:

4 Date of download: 6/3/2016 Copyright © ASME. All rights reserved. From: Intermediate Temperature Fuel Cell and Oxygen Reduction Studies With Carbon-Supported Platinum Alloy Catalysts in Phosphoric Acid Based Systems J. Fuel Cell Sci. Technol. 2011;9(1):011002-011002-9. doi:10.1115/1.4004461 The I–V plots for commercial PtNi catalysts at 90°C, 120°C, and 150°C Figure Legend:

5 Date of download: 6/3/2016 Copyright © ASME. All rights reserved. From: Intermediate Temperature Fuel Cell and Oxygen Reduction Studies With Carbon-Supported Platinum Alloy Catalysts in Phosphoric Acid Based Systems J. Fuel Cell Sci. Technol. 2011;9(1):011002-011002-9. doi:10.1115/1.4004461 The I–V plots by chronoamperometry for Pt alloy catalysts Figure Legend:

6 Date of download: 6/3/2016 Copyright © ASME. All rights reserved. From: Intermediate Temperature Fuel Cell and Oxygen Reduction Studies With Carbon-Supported Platinum Alloy Catalysts in Phosphoric Acid Based Systems J. Fuel Cell Sci. Technol. 2011;9(1):011002-011002-9. doi:10.1115/1.4004461 Tafel plots for Pt–Ni alloy catalysts Figure Legend:

7 Date of download: 6/3/2016 Copyright © ASME. All rights reserved. From: Intermediate Temperature Fuel Cell and Oxygen Reduction Studies With Carbon-Supported Platinum Alloy Catalysts in Phosphoric Acid Based Systems J. Fuel Cell Sci. Technol. 2011;9(1):011002-011002-9. doi:10.1115/1.4004461 Exchange current densities and Tafel slopes for Pt alloy catalysts Figure Legend:

8 Date of download: 6/3/2016 Copyright © ASME. All rights reserved. From: Intermediate Temperature Fuel Cell and Oxygen Reduction Studies With Carbon-Supported Platinum Alloy Catalysts in Phosphoric Acid Based Systems J. Fuel Cell Sci. Technol. 2011;9(1):011002-011002-9. doi:10.1115/1.4004461 Fuel cell performance under various oxygen concentrations at 150°C of MEAs using 30%Pt–Fe/C and 30% Pt/C cathode electrodes utilizing 0.4 mgPtcm−2 with 40 wt.% PTFE Figure Legend:

9 Date of download: 6/3/2016 Copyright © ASME. All rights reserved. From: Intermediate Temperature Fuel Cell and Oxygen Reduction Studies With Carbon-Supported Platinum Alloy Catalysts in Phosphoric Acid Based Systems J. Fuel Cell Sci. Technol. 2011;9(1):011002-011002-9. doi:10.1115/1.4004461 Fuel cell performance of MEAs using Pt/Ni, Pt/Co and Pt/C cathode electrodes utilizing 0.4 mgPtcm−2 with 40 wt.% PTFE. Air at 150°C. Figure Legend:


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