How does it work?

How Hydrogen Fuel Cell Vehicles Work

Hydrogen fuel cell vehicles are a type of electric vehicle that use hydrogen as their fuel. The hydrogen is stored in a tank on the vehicle, and the oxygen is drawn from the air. The hydrogen and oxygen are then combined in a fuel cell, where they react to produce electricity and water.

The electricity produced by the fuel cell is used to power the vehicle's electric motor. The electric motor is similar to the motor in an electric car, but it is more powerful. The only byproducts of the reaction in the fuel cell are water and heat.

How the Reaction Works

The reaction in a hydrogen fuel cell is a type of electrochemical reaction called a proton exchange membrane (PEM) fuel cell. In a PEM fuel cell, the hydrogen and oxygen are separated by a membrane that allows protons to pass through, but it prevents the hydrogen and oxygen molecules from mixing.

The hydrogen atoms in the fuel cell are split into electrons and protons. The electrons flow through an external circuit, creating an electric current. The protons pass through the membrane to the cathode where they combine with oxygen molecules to form water.

Here is a more detailed explanation of the reaction:

The entire process is very efficient, and it produces no harmful emissions. Hydrogen fuel cell vehicles are therefore considered to be zero-emission vehicles.

Here are some additional details about the reaction:

Advantages of Hydrogen Fuel Cell Vehicles

Hydrogen fuel cell vehicles offer a number of advantages over traditional gasoline-powered vehicles:

Challenges of Hydrogen Fuel Cell Vehicles

There are also some challenges associated with hydrogen fuel cell vehicles:


Hydrogen fuel cell vehicles are a promising new technology with the potential to revolutionise the transportation industry. They offer a number of advantages over traditional gasoline-powered vehicles, but they also face some challenges. As the technology continues to develop and the infrastructure for hydrogen refuelling stations is built out, hydrogen fuel cell vehicles will become more affordable and convenient to own and operate. This will make hydrogen fuel a more viable option for consumers and businesses, and it will help to reduce our reliance on fossil fuels.

Additional Information

Here are some additional information about hydrogen fuel cell vehicles: