The Use of Heteropoly Acids as Supports for Low, Ultra-Stable Pt Electrocatalysts

Andrew M. Herring; Ronald J. Stanis; Mei Chen Kuo; John A. Turner

doi:10.1149/1.2780947

The Use of Heteropoly Acids as Supports for Low, Ultra-Stable Pt Electrocatalysts

Andrew M. Herring, Ronald J. Stanis, Mei Chen Kuo, John A. Turner

Chemistry and Nanoscience

Research output: Contribution to journal › Article › peer-review

3 Scopus Citations

Abstract

We have successfully immobilized several HPA on carbons using covalent attachment. The morphology of these materials is still under investigation, but the hybrid HPA carbons can be used to stabilize nano-Pt particles. The fuel cell performance is not improved over a suitable control electrode. If the correct HPA is used it appears that significant advantages can be obtained in fuel cell catalyst layer stability. Stability over 4000 cycles has been achieved. Encouragingly the F⁺ emission rates from the MEA can be dramatically reduced.

Original language	American English
Pages (from-to)	335-346
Number of pages	12
Journal	ECS Transactions
Volume	11
Issue number	1 PART 1
DOIs	https://doi.org/10.1149/1.2780947 https://doi.org/10.1149/1.2780947
State	Published - 2007
Event	7th Symposium Devoted to Proton Exchange Membrane Fuel Cells - 212th ECS Meeting - Washington, DC, United States Duration: 7 Oct 2007 → 12 Oct 2007

NREL Publication Number

NREL/JA-2A0-44113

Keywords

fuel cells
hydrogen
performance
stability

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abstract = "We have successfully immobilized several HPA on carbons using covalent attachment. The morphology of these materials is still under investigation, but the hybrid HPA carbons can be used to stabilize nano-Pt particles. The fuel cell performance is not improved over a suitable control electrode. If the correct HPA is used it appears that significant advantages can be obtained in fuel cell catalyst layer stability. Stability over 4000 cycles has been achieved. Encouragingly the F+ emission rates from the MEA can be dramatically reduced.",

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AU - Stanis, Ronald J.

AU - Kuo, Mei Chen

AU - Turner, John A.

PY - 2007

Y1 - 2007

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AB - We have successfully immobilized several HPA on carbons using covalent attachment. The morphology of these materials is still under investigation, but the hybrid HPA carbons can be used to stabilize nano-Pt particles. The fuel cell performance is not improved over a suitable control electrode. If the correct HPA is used it appears that significant advantages can be obtained in fuel cell catalyst layer stability. Stability over 4000 cycles has been achieved. Encouragingly the F+ emission rates from the MEA can be dramatically reduced.

KW - fuel cells

KW - hydrogen

KW - performance

KW - stability

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ER -

The Use of Heteropoly Acids as Supports for Low, Ultra-Stable Pt Electrocatalysts

Abstract

NREL Publication Number

Keywords

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