Minimum grid digital simulation of chronoamperometry at a disk electrode
نویسندگان
چکیده
منابع مشابه
Diffusion-controlled chronoamperometry at a disk electrode.
An accurate formula exists for describing the decay of the current following the imposition of extreme concentration polarization on a disk electrode under diffusion-controlled conditions. It has been amply validated by diverse simulations and is presented here in a more compact form than hitherto. The formula finds application beyond the realm of potential-step chronoamperometry.
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Experimental verification of the theory for the transient current response of a wall-jet electrode to a potential step is given. The systems studied are ferrocyanide and bromide oxidation in a specially designed large volume cell. Good and reproducible agreement between diffusion coefficients determined by this method and independent techniques is found. Optimized conditions, to avoid on the on...
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A theory is presented which describes the transient current response to a potential step at a wall-jet electrode, thus defining the “response time” of the electrode. Results are given in the form of a normalized transient as a function of a dimensionless time parameter which permits the analysis of experimental data for electrodes of any geometry and for any solution flow rate.
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ژورنال
عنوان ژورنال: Electrochimica Acta
سال: 2012
ISSN: 0013-4686
DOI: 10.1016/j.electacta.2012.06.009