%0 Journal Article
%T A Simplified Microcontroller Based Potentiostat for Low-Resource Applications
%A Bolaji Aremo
%A Mosobalaje Oyebamiji Adeoye
%A Imoh Bassey Obioh
%A Odunayo Adetola Adeboye
%J Open Journal of Metal
%P 37-46
%@ 2164-277X
%D 2015
%I Scientific Research Publishing
%R 10.4236/ojmetal.2015.54005
%X <p align=\"justify\">
	A low component count, microcontroller-based potentiostat circuit was developed through the use of operational amplifiers arranged in different feedback configurations. This was developed to alleviate the cost burden of equipment procurement in low-cost and budget applications. Simplicity was achieved in the design by the use of the microcontroller¡¯s native functionalities and a low-cost R/2R resistor ladder digital-to-analogue converter. The potentiostat was used to investigate the Ni<sup>2+</sup>/Ni(s) redox couple in a 3-electrode cell with a silver/silver chloride reference electrode and graphite counter and working electrodes. Linear sweep voltammograms were ob-tained at scan rates of 10, 20, 30 and 40 mV/s. The analysis of the peak current versus (scan rate)<sup>1/2</sup> plot indicated that the Ni<sup>2+</sup>/Ni(s) reduction, though conforming to the Randles-Sevcik equation, was a non-reversible redox reaction.a
</p>
%K Potentiostat
%K Voltammogram
%K Microcontroller
%K Randles-Sevcik
%K Scan Rate
%U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=63265