Numerical analysis of a model for nickel–iron alloy electrodeposition on rotating disk electrode

Abstract

To understand the nickel–iron electrodeposition process better, we have developed a one-dimensional numerical model. This model addresses dissociation, diffusion, electromigration, convection and deposition of multiple ion species. The reaction mechanism in this model differs in that Ni²⁺ and Fe²⁺ are the electroactive species and NiOH⁺ and FeOH⁺ are not involved whatsoever. Taking account of the anisotropic behaviour of the solution we introduce a domain decomposition numerical method. Simulations with experimental data show that our model can predict characteristic features of the nickel–iron system.

Keywords:

• reaction-diffusion
• domain decomposition
• electrodeposition

2000 AMS Subject Classification :

• 65J15
• 65L10
• 65L20
• 65N55
• 76W05

Acknowledgements

This work was supported by the Action Integree program MA/02/33, the Agence universitaire de la Francophonie AUF and the Elie Cartan Institute (IECN) of the Henri Poincaré University.