Version 1
: Received: 1 September 2024 / Approved: 2 September 2024 / Online: 2 September 2024 (08:54:19 CEST)
How to cite:
Pinto Souza, A. K.; de Moraes Cruz, C. A.; Carlos Dutra e Silva Júnior, É.; Braga Pontes, F. Current Mirror Improved Potentiostat (CMIPot) for Three Electrode Electrochemical Cell. Preprints2024, 2024090055. https://doi.org/10.20944/preprints202409.0055.v1
Pinto Souza, A. K.; de Moraes Cruz, C. A.; Carlos Dutra e Silva Júnior, É.; Braga Pontes, F. Current Mirror Improved Potentiostat (CMIPot) for Three Electrode Electrochemical Cell. Preprints 2024, 2024090055. https://doi.org/10.20944/preprints202409.0055.v1
Pinto Souza, A. K.; de Moraes Cruz, C. A.; Carlos Dutra e Silva Júnior, É.; Braga Pontes, F. Current Mirror Improved Potentiostat (CMIPot) for Three Electrode Electrochemical Cell. Preprints2024, 2024090055. https://doi.org/10.20944/preprints202409.0055.v1
APA Style
Pinto Souza, A. K., de Moraes Cruz, C. A., Carlos Dutra e Silva Júnior, É., & Braga Pontes, F. (2024). Current Mirror Improved Potentiostat (CMIPot) for Three Electrode Electrochemical Cell. Preprints. https://doi.org/10.20944/preprints202409.0055.v1
Chicago/Turabian Style
Pinto Souza, A. K., Élvio Carlos Dutra e Silva Júnior and Fagnaldo Braga Pontes. 2024 "Current Mirror Improved Potentiostat (CMIPot) for Three Electrode Electrochemical Cell" Preprints. https://doi.org/10.20944/preprints202409.0055.v1
Abstract
This work presents a novel compact CMOS potentiostat designed circuit for electrochemical cell. The proposed topology functions as a circuit interface, controlling the polarization of voltage signals at the sensor electrodes and facilitating current measurement during the oxidation-reduction process of a analyzed solution. The potentiostat, designed for CMOS technology, comprises a two-stage amplifier, two current mirror blocks coupled to this amplifier, and a CMOS push-pull output stage. It employs the electrochemical method of cyclic voltammetry, operating within voltage range of ±0.8 V and scan rates of 10mV/s, 25mV/s, 100mV/s and 250 mV/s. The circuit is capable of reading currents ranging from 10 µA to 500 µA. Experimental results were obtained using a potassium ferrocyanide (K3(FeCN)6) redox solution with concentrations of 10, 15 and 20 mmol/L, and their corresponding voltammograms were evaluated. The experimental results from a discrete circuit demonstrate that the proposed potentiostat topology produces outcomes consistent with those of classical topologies presented in the literature and industrial equipment.
Engineering, Electrical and Electronic Engineering
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
