Journal
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
Volume 576, Issue 1, Pages 57-63Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jelechem.2004.10.007
Keywords
hydrogen oxidation reaction; hydrogen evolution reaction; graph theory; electrical networks
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The reaction route (RR) graph approach recently developed by us for complex, non-linear kinetic mechanisms is applied to the hydrogen oxidation and evolution reactions. A corresponding RR graph is constructed and translated into an equivalent electrical circuit network by associating each elementary step with a characteristic resistance for the steady-state case and considering the overall reaction as a power source. It is further shown that the steady-state kinetics of the reaction can be investigated employing the conventional methods of the electrical network theory. Using a set of rate constants for the hydrogen evolution reaction (her) in alkaline solutions from the literature, the dominant RRs are identified and simplified mechanisms and kinetics derived. (C) 2004 Elsevier B.V. All rights reserved.
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