What are Anode and Cathode?

The anode is the electrode where oxidation occurs. Oxidation is the process of losing electrons, which means the anode releases electrons into the external circuit. In a galvanic cell (like a battery), the anode is the negative terminal because it is the source of electrons. However, in an electrolytic cell, the anode is the positive terminal because it attracts anions (negative ions) from the electrolyte. The cathode is the electrode where reduction occurs. Reduction is the process of gaining electrons, meaning the cathode receives electrons from the external circuit. In a galvanic cell, the cathode is the positive terminal because it receives electrons. In an electrolytic cell, the cathode is the negative terminal because it attracts cations (positive ions) from the electrolyte. Enroll now at Tutoroot.
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