What is the Difference Between Anode and Cathode?

The main difference between an anode and a cathode lies in their roles within an electrochemical reaction. An anode and a cathode are electrodes that are involved in the flow of electricity in a device such as a battery or an electrolytic cell. Here are some key differences between anode and cathode:

• Anode:
• The anode is the negative or reducing electrode that releases electrons to the external circuit and oxidizes during an electrochemical reaction.
• In a battery, the anode is the electrode where electricity moves into.
• The anode is usually the positive side in an electrolytic cell.
• It acts as an electron donor.
• Cathode:
• The cathode is the positive or oxidizing electrode that acquires electrons from the external circuit and is reduced during the electrochemical reaction.
• In a battery, the cathode is the electrode where electricity is given out or flows out.
• The cathode is usually the negative side in an electrolytic cell.
• It acts as an electron acceptor.

In summary, the anode is where oxidation occurs and electrons are released, while the cathode is where reduction occurs and electrons are gained. The terms anode and cathode are relative and can switch roles depending on the context, such as during charging and discharging of a battery.

Comparative Table: Anode vs Cathode

Here is a table highlighting the differences between anode and cathode:

In summary, the anode is the electrode where oxidation occurs and electrons flow away from it, while the cathode is the electrode where reduction occurs and electrons flow towards it.