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 |
|---|---|
| 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
Cite this
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Probing Electrode Heterogeneity using Fourier-Transformed Alternating Current Voltammetry : Protocol Development. / Tan, Sze yin; Unwin, Patrick Robert; Macpherson, Julie V; Zhang, Jie; Bond, Alan M.
In: Electrochimica Acta, Vol. 240, 20.06.2017, p. 514-521.Research output: Contribution to journal › Article › Research › peer-review
TY - JOUR
T1 - Probing Electrode Heterogeneity using Fourier-Transformed Alternating Current Voltammetry
T2 - Protocol Development
AU - Tan, Sze yin
AU - Unwin, Patrick Robert
AU - Macpherson, Julie V
AU - Zhang, Jie
AU - Bond, Alan M.
PY - 2017/6/20
Y1 - 2017/6/20
N2 - 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.
AB - 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.
KW - Boron-doped diamond electrode
KW - Cyclic voltammetry
KW - Fourier-transformed large amplitude alternating current voltammetry
KW - Heterogeneous electrodes
KW - Numerical simulations
UR - http://www.scopus.com/inward/record.url?scp=85018257237&partnerID=8YFLogxK
U2 - 10.1016/j.electacta.2017.04.053
DO - 10.1016/j.electacta.2017.04.053
M3 - Article
VL - 240
SP - 514
EP - 521
JO - Electrochimica Acta
JF - Electrochimica Acta
SN - 0013-4686
ER -