Abstract
Due to social distancing constraints during the COVID-19 pandemic, several experiments were designed in the Fall 2020 and Spring 2021 semesters in our Electrochemistry and Corrosion elective course to demonstrate electrochemical phenomena and applications at the students’ homes with a kit sent by the school. We report here a student-designed experiment focused on water electrolysis, a well-studied phenomenon of great interest to the electrochemical industry. Its main appeal derives from the use of solar energy for the production of hydrogen gas, which is used in fuel cells. Here, the light-to-electricity converting function of light-emitting diodes is exploited to produce an electric current from solar radiation. This current is, in turn, utilized to perform microscale water electrolysis at graphite electrodes with the aid of a magnetic field. Lastly, the electrolysis products are employed to generate a voltage, demonstrating the fuel cell principle.
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