Electrodes define where electrochemical reactions occur and how potential and current are controlled. Understanding the roles and interactions of the working electrode (WE), reference electrode (RE), and counter electrode (CE) is essential for designing reliable and reproducible experiments.

This section covers the fundamental principles of electrode systems, including 2-electrode vs 3-electrode configurations, potential control logic, current pathways, and how electrode selection influences stability, accuracy, and data interpretation. Whether you are studying reaction mechanisms, evaluating catalysts, or troubleshooting unstable CV/EIS results, a solid grasp of electrode fundamentals is the foundation of trustworthy electrochemical measurements.