Abstract
Fourier-transformed large amplitude alternating current voltammetry (FTACV) provides a sensitive analytical tool for the discrimination of electrode reactions that are complicated by surface heterogeneity. In this paper, it is shown how the FTACV response at a dual-electrode system comprised of different electrode materials having different heterogeneous charge transfer (k0 1 and k0 2) can be resolved into its individual electrode kinetics components without prior knowledge of the electrode size ratio (θ1:θ2). This is possible when one process is reversible and the other is quasi-reversible; achievable by careful selection of the FTACV frequency. The applicability of the FTACV method over a wide range of electrode kinetic values and size ratios is considered for conditions under which numerical simulations based on a 1D diffusion model are adequate to describe the mass transport problem.
Original language | English |
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Pages (from-to) | 514-521 |
Number of pages | 8 |
Journal | Electrochimica Acta |
Volume | 240 |
DOIs | |
Publication status | Published - 20 Jun 2017 |
Keywords
- Boron-doped diamond electrode
- Cyclic voltammetry
- Fourier-transformed large amplitude alternating current voltammetry
- Heterogeneous electrodes
- Numerical simulations