Journal
ELECTROCHIMICA ACTA
Volume 51, Issue 17, Pages 3429-3433Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2005.09.038
Keywords
rotating disk electrode; gold; kinetic parameters; direct borohydride fuel cell; borohydride oxidation
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Borohydride oxidation has been investigated using a rotating disk electrode technique. The parameters, such as apparent rate constant, Tafel slope, Levich slope, number of electrons exchanged and reaction order, have been determined. The borohydride ion is oxidised on the gold electrode with an electrochemical rate constant of around 1 cm s(-1) at intermediate potentials where side reactions had less effect. Influences of temperature, concentrations of borohydride and supporting electrolyte (NaOH) on the parameters were evaluated. (c) 2005 Elsevier Ltd. All rights reserved.
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