Electrochemical voltage spectroscopy; Dopant diffusion in Durham polyacetylene
1989; Elsevier BV; Volume: 28; Issue: 3 Linguagem: Inglês
10.1016/0379-6779(89)90682-6
ISSN1879-3290
AutoresJ. Barker, Dianna Baldwin, David Bott, Simon J. Porter,
Tópico(s)Fuel Cells and Related Materials
ResumoAbstract The shape of the Electrochemical Voltage Spectrum obtained during the reductive doping of Durham polyacetylene is explained in terms of dopant diffusion parameters alone. The commonly observed hysteresis between the potentials of the onset of reduction and that of final charge removal are caused mainly by the fact that, in most measurements, diffusion equilibrium is never attained. The diffusion coefficient of Na + in reductively doped Durham polyacetylene has been determined by electrochemical voltage spectroscopy. A computer simulation of the Electrochemical Voltage Spectroscopy experiment is reported and used to test the validity of the diffusion model.
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