Macrokinetics of processes on porous electrodes
β Scribed by O.S. Ksenzhek
- Publisher
- Elsevier Science
- Year
- 1964
- Tongue
- English
- Weight
- 710 KB
- Volume
- 9
- Category
- Article
- ISSN
- 0013-4686
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β¦ Synopsis
A general discussion of the kinetics of reactions at porous electrodes is given on the basis of the thermodynamics of irreversible processes. The mechanism of the action of gas-diffusion electrodes in fuel cells is then discussed in more detail as a particular case. The degree of porosity and the size of the pores is considered in relation to the electrode efficiency.
R&rm&Discussion
get&ale de la cinetique de reactions a des electrodes poreuses au moyen de la thermodynamique des processus irreversibles. En particulier, l'on envisage avec plus de details le m&canisme de diffusion gazeuse dans les electrodes des piles a combustibles. du degre de porosite et des dimensions des pores.
Le rendement depend
Zusammenfassung-Die
Kinetik der Reaktionen an poriisen Elektroden wird auf Grund der Thermodynamik irreversibler Vorg5nge diskutiert. Die Wirkungsweise van Gas-Diffusionselektroden wird dann als Spezialfall in grosserem Detail erortert. Der Porositltsgrad und die
π SIMILAR VOLUMES
The simple theory proposed on the basis of a transmission-line model is shown to account fully for the ac behaviour of a brush electrode. Conversely,, the rate-determining process at such an electrode may conveniently be studied either by direct comparison with theoretical predictions for a pore or
A method is described by which the ease of reduction and reoxldation of porous lead dioxide electrodes may be assessed m the short time. Fourteen alloy porous electrode supports are compared with pure lead with special reference to the charge output on reduction, ease of reoxidation, and electrode s