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Corrosion and Degradation of Platinum-Based Electrocatalysts in Concentrated Phosphoric Acid |
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24.11.2008 г. |
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Corrosion and Degradation of Platinum-Based Electrocatalysts in Concentrated Phosphoric Acid M. R. Tarasevich, E. N. Lubnin, N. M. Zagudaeva, and E. A. Maleeva* Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Moscow, 119991 Russia *e-mail:
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Received June 5, 2007 Abstract — The degradation of nanodimensional platinum catalysts in concentrated phosphoric acid and the related changes in the kinetics of cathodic oxygen reduction have been studied in the course of accelerated corrosion tests. The results of structural and electrochemical investigations showed that the stability of such electrocatalytical systems substantially depends on the type of supporting carbon and the metal phase composition. DOI: 10.1134/S0033173208070060
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