Arbetslektrod

Arbetslektrod is a Swedish term that translates to "working electrode" in English. It is a fundamental component in electrochemistry, referring to the electrode where the electrochemical reaction of interest takes place. In an electrochemical cell, there are typically two electrodes: the working electrode and the counter electrode (or auxiliary electrode). The working electrode is where the analyte is oxidized or reduced, and its potential is controlled or measured relative to a reference electrode. The counter electrode serves to complete the electrical circuit, allowing current to flow. The design and material of the working electrode are crucial for the performance of an electrochemical experiment, as they influence factors such as reaction kinetics, sensitivity, and selectivity. Common materials for working electrodes include platinum, gold, carbon (such as glassy carbon or carbon paste), and various metal oxides. The surface of the working electrode can be modified with different substances to enhance its catalytic activity or to selectively bind specific analytes. The behavior of the working electrode is studied using techniques like cyclic voltammetry, chronoamperometry, and electrochemical impedance spectroscopy. Understanding the processes occurring at the working electrode is essential for interpreting electrochemical data and developing new electrochemical sensors and devices.