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Issue 67, 2012
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Electrochemical intermediate species and reaction pathway in H2 oxidation on solid electrolytes

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Abstract

We use spatially resolved photoelectron spectroscopy performed in operando to identify the reaction intermediates of the hydrogen electro-oxidation reaction on yttria-stabilized zirconia (YSZ) electrolytes with Pt electrodes. We find that hydroxyl on the zirconia electrolyte is a reaction intermediate in the hydrogen oxidation reaction and that it participates in the rate-determining step. In contrast to the general wisdom, the limiting step does not involve the transfer of charge. These results allow us to propose the detailed reaction pathway, which provides direct insight into how to accelerate the kinetics.

Graphical abstract: Electrochemical intermediate species and reaction pathway in H2 oxidation on solid electrolytes

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Publication details

The article was received on 04 May 2012, accepted on 26 Jun 2012 and first published on 26 Jun 2012


Article type: Communication
DOI: 10.1039/C2CC33229A
Citation: Chem. Commun., 2012,48, 8338-8340
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    Electrochemical intermediate species and reaction pathway in H2 oxidation on solid electrolytes

    F. El Gabaly, A. H. McDaniel, M. Grass, W. C. Chueh, H. Bluhm, Z. Liu and K. F. McCarty, Chem. Commun., 2012, 48, 8338
    DOI: 10.1039/C2CC33229A

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