Write the name of the electrolyte used in fuel cell.

Explanation

To answer the question regarding the name of the electrolyte used in a fuel cell, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Concept of a Fuel Cell**: A fuel cell is an electrochemical cell that converts the chemical energy of a fuel (usually hydrogen) and an oxidant (usually oxygen) into electricity through a chemical reaction.

2. **Identify the Components of a Fuel Cell**: A typical fuel cell consists of two electrodes: an anode (where oxidation occurs) and a cathode (where reduction occurs). It also contains an electrolyte that facilitates the movement of ions between the electrodes.

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