POTENTIAL AND CURRENT DISTRIBUTION IN POROUS-ELECTRODES UNDER CHARGE-TRANSFER KINETIC CONTROL

Authors
BISANG JM JUTTNER K KREYSA G
Citation
Jm. Bisang et al., POTENTIAL AND CURRENT DISTRIBUTION IN POROUS-ELECTRODES UNDER CHARGE-TRANSFER KINETIC CONTROL, Electrochimica acta, 39(8-9), 1994, pp. 1297-1302
Citations number
16
Categorie Soggetti
Electrochemistry
Journal title
Electrochimica acta → ACNP
ISSN journal
00134686
Volume
39
Issue
8-9
Year of publication
1994
Pages
1297 - 1302
Database
ISI
SICI code
0013-4686(1994)39:8-9<1297:PACDIP>2.0.ZU;2-I
Abstract
A mathematical model to represent porous electrodes assuming that the electrochemical reaction has a Tafel kinetic control is proposed. Expr essions are developed to analyse the performance of the electrode and the effect of the geometric parameters on the effectiveness is discuss ed. The theoretical results are compared with experimental data of the oxygen evolution on thick hydrous nickel oxide electrodes under the c ondition that the resistivity of the pore material is greater than tha t of the electrolyte solution, rho(m) much greater than rho(s) = 0.