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Electrode kinetics of manganese-dioxide electrodes in alkaline solution

✍ Scribed by A. Era; Z. Takehara; S. Yoshizawa


Publisher
Elsevier Science
Year
1968
Tongue
English
Weight
439 KB
Volume
13
Category
Article
ISSN
0013-4686

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✦ Synopsis


Manganese-dioxide electrodes prepared by electrodeposition

on the graphite rods were discharged in the alkaline solution at constant current density. The potential/time curves can be fairly explained on the basis of diiusion of the reaction product into the solid electrode. The ratedetermining step in the discharge process of the manganese-dioxide electrode in alkaline solution is the diffusion process of MnOOH, which is the primary product of discharge reaction, from the electrode surface towards the inner part of the solid electrode.

R&um&Les

electrodes de bioxyde de manganese prepames par depot &ctrolytique sur des barres de graphite ont et6 d6charg&4ansl'&ctrolytealcalin il une densit6decourantconstante. Cescourbes potentiel-temps peuvent &re parfaitement expliquQs sur la base. de la diiusion du produit de reduction cathodique dans l%lectrode solide. Les r&sultats ex~rimentaux nous conduisent a la conclusion que l'action qui d&ermine le taux dans le processus de decharge de l'&ctrode de bioxyde de manganese dans l'&ctrolyte alcalin est le processus de diffusion du MnOOH, qui est le produit primaire de la reaction de d&charge, partant de la surface de l%lectrode vers la partie interieure de l'&ctrode solide.

ZusammenfassanR-Braunsteinelektroden, hergestellt durch elektrolytische Abscheidung auf Graphitstilben, wurden in alkalischen Lasungen bei konstanter Stromdichte entladen. Die Potential/ Zeit-Kurven k&me gut durch die Annahme erkhlrt


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