How does a hydrogen bike work?
Hydrogen bike: how does it work?
The hydrogen bike operates using a fuel cell that converts hydrogen into electricity. This electricity powers an electric motor, assisting the cyclist in their efforts. Unlike traditional electric bikes equipped with lithium-ion batteries, the hydrogen bike uses a high-pressure tank containing hydrogen (H₂) as its energy source.
How does a hydrogen bike work?
The principle of the hydrogen bicycle is based on a chemical reaction between the hydrogen stored in its tank and the oxygen present in the air. This reaction, carried out in a fuel cell , produces electricity to power the bicycle's motor.
Here are the steps of how a hydrogen bike works :
- Hydrogen storage : The bicycle is equipped with a pressurized tank containing hydrogen gas.
- Electricity production : The fuel cell combines hydrogen with oxygen from the air, generating an electric current.
- Motor power supply : The electricity produced powers an electric motor which assists pedaling.
- Water vapor emissions : Unlike thermal engines, the only emission from a hydrogen bike is water in the form of vapor.
What is the energy source of the hydrogen bike?
The hydrogen bike draws its energy from dihydrogen (H₂) , stored in a pressurized tank . This energy is converted into electricity via the fuel cell , which works on the principle of electrochemistry .
Difference with a classic electric bike:
- The electric bike uses a rechargeable battery to store energy.
- The hydrogen bike produces its electricity directly through the reaction between hydrogen and oxygen.
How is electricity generated in a hydrogen bike?
Electricity is generated using a fuel cell that uses hydrogen as fuel. This cell consists of an anode and a cathode , separated by an electrolytic membrane .
The stages of electricity production:
- Hydrogen enters the fuel cell through the anode.
- Oxygen from the air is captured at the cathode.
- A chemical reaction takes place, separating electrons and protons from the hydrogen .
- Electrons flow in an external circuit, generating an electric current .
- Protons cross the membrane and react with oxygen , forming water .
How does a hydrogen bike perform in terms of operation?
Thehydrogen bike is optimized to offer:
- Fast charging : Filling up with hydrogen only takes 2 to 5 minutes , unlike several hours for a battery.
- High autonomy : From 100 to 150 km with a full tank.
- Quiet operation : Thanks to its electric motor powered by hydrogen .
What is the environmental impact of running a hydrogen bike?
The operation of a hydrogen city, cross or sport bike is based on a clean and sustainable process.
- Zero emissions : Only water vapor is released.
- Renewable energy possible : If hydrogen is produced from green energy ( electrolysis of water with renewable electricity ).
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