Electrochemical reactions at lead dioxide electrodes
Peter C. Jones
2134/34481
https://repository.lboro.ac.uk/articles/thesis/Electrochemical_reactions_at_lead_dioxide_electrodes/9397592
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.
2018-08-13 16:20:21
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Chemical Sciences not elsewhere classified