Depletion effect in the thin layer cell for in situ spectroelectrochemical study of faradaic reaction with special reference to oxygen reduction
✍ Scribed by Ivo Roušar; Nikola A. Anastasijević
- Publisher
- Elsevier Science
- Year
- 1988
- Tongue
- English
- Weight
- 326 KB
- Volume
- 33
- Category
- Article
- ISSN
- 0013-4686
No coin nor oath required. For personal study only.
✦ Synopsis
The local current densities and local concentrations were calculated in a thin layer (l-20 pm) of the electrolyte adjacent to a disk electrode covered with a transparent window. The depletion of the electrolyte depends considerably on the average current density and the time of observation. NOMENCLATURE Tafel coetlicient (V) dimensionless concentration, see Equation (3) concentration of the reacting species (molm-s) diffusion coetlicient (m* s-') potential of working electrode (V) Faraday, 96487 C height of the electrolyte layer between the electrode and the window (m) current density (A m-a) dimensionless constant, see Equation (8) dimensionless constant, see Equation (10) standard rate constant (m s-r) number of electron transferred gas constant (J mol-' K -') dimensionless coordinate, see Equation (7b) radius of the working disk electrode (m) absolute temperature (K) time (s) transfer coefficient, 01 E (0, 1 > Galvani potential (V) dimensionless Galvani potential, see Equation (5) dimensionless time, see Equation (7a) specific resistivity of the electrolyte (0hm.m)