Caux Mélicia, Achit Anis, Var Kethsovann, Boitel-Aullen Gabriel, Rose Daniel, Aubouy Agnès, Argentieri Sylvain, Campagnolo Raymond, Maisonhaute Emmanuel
Sorbonne Université, CNRS, Laboratoire Interfaces et Systèmes Electrochimiques, 4 place Jussieu, 75005 Paris, France.
UMR152 PHARMADEV, Université de Toulouse, IRD, UPS, France.
HardwareX. 2022 Mar 9;11:e00290. doi: 10.1016/j.ohx.2022.e00290. eCollection 2022 Apr.
This work presents 4 open source potentiostat solutions for performing accurate measurements in cyclic voltammetry and square wave voltammetry at a low price. A very simple and easy to reproduce analogic board (c.a. 10 €) was driven either by a Teensy card from the company PJRC under an Arduino/Python software solution (39 €) or by an Analog Discovery 2 device from Digilent (less than 300 €). A smartphone Bluetooth Android interface was also created to circumvent the use of a computer. We demonstrated that our scheme is suitable for measurements in classical electrochemical conditions but also to carry out experiments with ultramicroelectrodes. We could thus reach a noise resolution of less than 1 pA. Scan rates of 8000 Vs with ohmic drop compensation were also achieved. The device is suitable for teaching purposes but also for experiments in a participative science context on the ground, or countries with lower financial possibilities.
这项工作展示了4种开源恒电位仪解决方案，可用于以低成本在循环伏安法和方波伏安法中进行精确测量。一种非常简单且易于复制的模拟电路板（约10欧元），由PJRC公司的Teensy卡驱动，采用Arduino/Python软件解决方案（39欧元），或者由Digilent公司的Analog Discovery 2设备驱动（不到300欧元）。还创建了一个智能手机蓝牙安卓接口，以避免使用计算机。我们证明，我们的方案不仅适用于经典电化学条件下的测量，也适用于使用超微电极进行实验。因此，我们能够达到小于1 pA的噪声分辨率。在进行欧姆降补偿的情况下，还实现了8000 V/s的扫描速率。该设备适用于教学目的，也适用于在实地参与式科学背景下进行实验，或在经济条件较差的国家使用。
