Write the names of the electrodes used in fuel cell.

Explanation

**Step-by-Step Solution:**

1. **Understanding Fuel Cells**: A fuel cell is an electrochemical device that converts chemical energy from a fuel (usually hydrogen) and an oxidant (usually oxygen) into electricity through a chemical reaction.

2. **Identifying the Electrodes**: In a fuel cell, there are two electrodes:
- **Anode**: This is the electrode where oxidation occurs. In a hydrogen fuel cell, hydrogen gas (H₂) is used at the anode.
- **Cathode**: This is the electrode where reduction occurs. In a hydrogen fuel cell, oxygen gas (O₂) is used at the cathode.

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