Thesis-1968-Jones.pdf (6.07 MB)
Download fileElectrochemical reactions at lead dioxide electrodes
thesis
posted on 2018-08-13, 16:20 authored by Peter C. JonesPreliminary 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.
Funding
Loughborough University of Technology (scholarship).
History
School
- Science
Department
- Chemistry