PolArStat: An Arduino based potentiostat for low-power electrochemical applications

T. Tichter*, M. Gernhard, P. C. K. Vesborg

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

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Abstract

A potentiostatic circuit for low-power applications in the range of ±3.3 V and ±13.75 mA is developed. The device achieves a full-scale resolution of ≈ 1.6 mV and ≈ 1 μA - sufficient for a wide range of electroanalytical experiments. For controlling the potentiostat a Python-based graphical user interface (GUI) is developed and implemented in our open-source electrochemistry software Polarographica. This enables electroanalytical experiments such as cyclic voltammetry (CV) and chronoamperometry (CA) in a live-graphing environment at an operational convenience similar to commercial devices, combined with a powerful tool for subsequent data analysis. The performance of our potentiostat is validated by the excellent agreement of CV and CA data acquired with five different in-house built devices and a commercial Gamry Reference 620. Finally, we provide a printed circuit board (PCB) design of our device as an Arduino shield that requires only a minimum of additional components. This powerful open-source tool is suitable for customized electrochemical experiments at material costs of less than 40 €.
Original languageEnglish
Article number143119
JournalElectrochimica Acta
Volume469
Number of pages8
ISSN0013-4686
DOIs
Publication statusPublished - 2023

Keywords

  • Arduino-Uno shield
  • Chronoamperometry
  • Cyclic voltammetry
  • Electrochemical analysis software
  • Microcontroller based potentiostat for low power applications

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