Figure 5. Schematic representation of the experimental set-up for gas evolution at a bipolar electrode. (here in the form of a pencil lead)

From

Tracking Electrons - Colourful Insights into the Processes of Bipolar Electrochemistry with Polypyrrole

Dominik Quarthal, Marco Oetken

World Journal of Chemical Education. 2023, 11(3), 114-120 doi:10.12691/wjce-11-3-15