We report the design of a low-cost electrochemical workstation and open-source graphical user interface capable of performing a variety of electrochemical methods in an undergraduate teaching laboratory. The instrument─based on the popular Arduino microcontroller board─can be constructed from common components for $40 USD. The modular design of the instrument enables instructors to employ it to fit the needs of their curricula and allows for the acquisition of potentiostatic and galvanostatic data. The incorporation of positive-feedback ohmic drop compensation into the hardware, coupled with the judicious use of signal-averaging within the user-friendly LabVIEW standalone program, allow us to acquire meaningful quantitative electrochemical data (e.g., Tafel slopes) comparable to much more expensive research-grade potentiostats. The companion program is available free of charge online and vastly improves the scope of electrochemical methods available to undergraduate laboratories. We demonstrate the versatility of this potentiostat/galvanostat by employing it in General Chemistry and Inorganic Chemistry courses in modules that touch on sustainability, renewable energy, and electrocatalysis. We hope these improvements will enable instructors to incorporate electroanalytical techniques into their undergraduate curricula and empower the next generation of scientists to take full advantage of these methods in their research.

中文翻译：

---

用于本科设计电化学实验室的改进的恒电位仪/恒电流仪

我们报告了低成本电化学工作站和开源图形用户界面的设计，能够在本科教学实验室中执行各种电化学方法。该仪器基于流行的 Arduino 微控制器板，可由通用组件构建而成，价格为 40 美元。该仪器的模块化设计使教师能够利用它来满足其课程的需求，并允许采集恒电位和恒电流数据。将正反馈欧姆压降补偿融入到硬件中，再加上用户友好的 LabVIEW 独立程序中明智地使用信号平均，使我们能够获取有意义的定量电化学数据（例如，塔菲尔斜率），而这些数据可与昂贵得多的电化学数据相媲美。研究级恒电位仪。该配套程序可在线免费获取，极大地扩大了本科生实验室可用的电化学方法的范围。我们通过在涉及可持续性、可再生能源和电催化的普通化学和无机化学课程中使用该恒电位仪/恒电流仪，展示了该恒电位仪/恒电流仪的多功能性。我们希望这些改进将使教师能够将电分析技术纳入他们的本科课程，并使下一代科学家能够在他们的研究中充分利用这些方法。