Loughborough University
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Electrochemical reactions at lead dioxide electrodes

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posted on 2018-08-13, 16:20 authored by Peter C. Jones
Preliminary passivation studies established that kinetic measurements could be made at α- and β-lead dioxide electrodes, in perchloric acid electrolytes, without the intrusion of solid films. The kinetics of the rate controlling exchange reaction at α- and β-PbO2 have been investigated using the galvanostatic pulse technique. The overpotential-current density data was interpreted in terms of two rate controlling charge transfer mechanisms. Around the equilibrium potential the reaction mechanism appears as a simultaneous two-electron transfer which changed to two consecutive single-electron transfer steps at high overpotential. Possible reaction mechanisms have been discussed on the basis of the observed kinetic parameters. Differential capacitance-potential data for α- and β-PbO2 has been measured in inert electrolytes. A comparison of the electrochemical behaviour of α- and β-PbO2 has been made.


Loughborough University of Technology (scholarship).



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© Peter Christopher Jones

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This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

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A Doctoral Thesis. Submitted in partial fulfilment of the requirements for the award of Doctor of Philosophy at Loughborough University.


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