What are gained or lost it the electrode?

In an electrochemical cell, electrons are gained or lost at the electrodes during oxidation and reduction reactions. At the anode, oxidation occurs, resulting in the loss of electrons, while at the cathode, reduction takes place, leading to the gain of electrons. This transfer of electrons is fundamental to the flow of electric current in the circuit. Thus, the electrodes facilitate the gain or loss of electrons, which drives the overall electrochemical process.