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Novel same-metal three electrode system for cyclic voltammetry studies
Vengadesh Periasamy1,2, Prince Nishchal Narayanaswamy Elumalai1, Sara Talebi2
1Low Dimensional Materials Research Centre (LDMRC), Department of Physics, Faculty of Science, Universiti Malaya 50603 Kuala Lumpur Malaysia vengadeshp@um.edu.my.
RSC Advances
|February 23, 2023
Summary
This study introduces a simplified gold three-electrode system on a printed circuit board (PCB) for electrochemical measurements. The novel design offers improved repeatability and sensitivity using minimal sample volumes.
Area of Science:
- Electrochemistry
- Materials Science
- Sensor Technology
Background:
- Conventional three-electrode systems for electrochemical measurements are complex, requiring multiple metals and intensive maintenance.
- Existing setups necessitate varied electrode configurations for redox activity analysis across different platforms.
- These limitations hinder efficient and repeatable electrochemical characterization.
Purpose of the Study:
- To develop a simplified and cost-effective three-electrode electrochemical cell.
- To investigate the performance of a novel same-metal (gold) electrode system fabricated on a printed circuit board (PCB).
- To compare the electrochemical performance of the PCB-based system with conventional electrode setups.
Main Methods:
- Fabrication of a miniaturized printed circuit board (PCB) with integrated gold counter, working, and reference electrodes.
- Electrochemical characterization using potassium ferricyanide as a redox probe.
- Acquisition of cyclic voltammetric profiles using both the novel PCB-based gold-gold-gold system and conventional electrode configurations (e.g., glassy carbon, platinum, Ag/AgCl).
Main Results:
- Both the PCB-based gold system and conventional systems produced similar cyclic voltammograms within the -0.5 to +0.7 V potential window.
- The novel PCB-based same-metal electrochemical cell demonstrated impressive cyclic voltammetric repeatability after minimal activation cycles.
- The new system exhibited higher redox sensitivity and a wider detection window while requiring only trace amounts of solutions/analytes.
Conclusions:
- A simplified, miniaturized, same-metal (gold) three-electrode system on a PCB is feasible for electrochemical measurements.
- This novel design offers significant advantages in terms of ease of use, repeatability, sensitivity, and reduced sample consumption.
- The PCB-based gold electrode system presents a promising alternative to conventional electrochemical setups for various applications.
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