Cation–hydroxide–water coadsorption inhibits the alkaline hydrogen oxidation reaction [electronic resource].

Published:: Washington, D.C. : United States. Dept. of Energy, 2016.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy
Physical Description:: pages 4,464-4,469 : digital, PDF file
Additional Creators:: Los Alamos National Laboratory, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information

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Summary:

Rotating disk electrode voltammograms and infrared reflection absorption spectra indicate that the hydrogen oxidation reaction of platinum in 0.1 M tetramethylammonium hydroxide solution is adversely impacted by time-dependent and potential-driven cation–hydroxide–water coadsorption. Impedance analysis suggests that the hydrogen oxidation reaction inhibition is mainly caused by the hydrogen diffusion barrier of the coadsorbed trilayer rather than intuitive catalyst site blocking by the adsorbed cation species. Finally, these results give useful insights on how to design ionomeric binders for advanced alkaline membrane fuel cells.

Report Numbers:

E 1.99:la-ur--15-27065
la-ur--15-27065

Subject(s):

Other Subject(s):

Energy Sciences

Note:

Published through SciTech Connect.
10/24/2016.
"la-ur--15-27065"
Journal of Physical Chemistry Letters 7 22 ISSN 1948-7185 AM
Hoon Taek Chung; Ulises Martinez; Ivana Matanovic; Yu Seung Kim.

Funding Information:

AC52-06NA25396

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