Single-Molecule Nanocatalysis Shows In Situ Deactivation of Pt/C Electrocatalysts during the Hydrogen-Oxidation Reaction

Yuwei Zhang, Tao Chen, Shaun Alia, Bryan S. Pivovar, Weilin Xu

Research output: Contribution to journalArticlepeer-review

33 Scopus Citations

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 languageAmerican English
Pages (from-to)3086-3090
Number of pages5
JournalAngewandte Chemie - International Edition
Volume55
Issue number9
DOIs
StatePublished - 2016

Bibliographical note

Publisher Copyright:
© 2016 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.

NREL Publication Number

  • NREL/JA-5900-66165

Keywords

  • deactivation
  • electrocatalysis
  • electrochemistry
  • platinum
  • single-molecule fluorescence

Fingerprint

Dive into the research topics of 'Single-Molecule Nanocatalysis Shows In Situ Deactivation of Pt/C Electrocatalysts during the Hydrogen-Oxidation Reaction'. Together they form a unique fingerprint.

Cite this