An anode is an electrode through which conventional current enters a device, while a cathode is an electrode through which conventional current leaves a device. Learn how the terms are used for different types of devices, such as batteries, diodes and vacuum tubes, and how they were coined by Michael Faraday. Anode vs. Cathode What's the Difference? Anode and cathode are two essential components in electrochemical cells. The anode is the electrode where oxidation occurs, meaning it loses electrons and becomes positively charged. On the other hand, the cathode is the electrode where reduction takes place, gaining electrons and becoming negatively charged. In simple terms, the anode is the source of electrons, while the cathode is the receiver. These two electrodes work together to create a flow of ... Anode and cathode are electrodes in devices. When is the anode and when is the cathode ? Galvanic cell, battery, rechargeable battery, diode, electron tube.