Abstract
By coupling a Pt-catalyzed fluorogenic reaction with the Pt-electrocatalyzed hydrogen-oxidation reaction (HOR), we combine single-molecule fluorescence microscopy with traditional electrochemical methods to study the real-time deactivation kinetics of a Pt/C electrocatalyst at single-particle level during electrocatalytic hydrogen-oxidation reaction. The decay of the catalytic performance of Pt/C could be mainly attributed to the electrocatalysis-induced etching or dissolution of Pt nanoparticles. Spontaneous regeneration of activity and incubation period of the Pt electrocatalyst were also observed at single-particle level. All these new insights are practically useful for the understanding and rational design of highly efficient electrocatalysts for application in fuel cells.
| Original language | American English |
|---|---|
| Pages (from-to) | 3086-3090 |
| Number of pages | 5 |
| Journal | Angewandte Chemie - International Edition |
| Volume | 55 |
| Issue number | 9 |
| DOIs | |
| State | Published - 2016 |
Bibliographical note
Publisher Copyright:© 2016 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.
NLR Publication Number
- NREL/JA-5900-66165
Keywords
- deactivation
- electrocatalysis
- electrochemistry
- platinum
- single-molecule fluorescence
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