Hydrogen vehicles work by utilizing a fuel cell to convert hydrogen gas into electricity, which powers the electric motor. The fuel cell combines hydrogen with oxygen from the air to generate electricity through an electrochemical reaction. This electricity is then used to drive the vehicle's motor, providing power and propulsion.
One of the key components of a hydrogen vehicle is the fuel cell stack, which contains a series of cells that use a platinum catalyst to split the hydrogen molecules into protons and electrons. The protons pass through a membrane, while the electrons are forced to flow through an external circuit, creating an electric current. The protons and electrons then recombine with oxygen from the air to produce water vapor, which is emitted as the only byproduct of the process.
While hydrogen vehicles operate similarly to electric vehicles, the main difference lies in the way they store and generate electricity. Instead of relying on batteries, hydrogen vehicles use fuel cells to produce electricity on demand, providing a long driving range and faster refueling times.
Furthermore, hydrogen production methods are constantly evolving. Hydrogen is primarily produced through steam methane reforming that relies on natural gas. However, advancements in renewable energy sources, such as solar and wind power, enable green hydrogen production using renewable electricity and water electrolysis. This shift towards green hydrogen production is crucial for the overall sustainability of hydrogen vehicles.