How does a hydrogen car work?
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When hydrogen is needed for the fuel cell, the tank regulates the pressure, lowering it allowing the hydrogen to flow safely from the storage tank towards the fuel cells.
Once the hydrogen reaches the fuel cells, it passes along the surface of the fuel cell membrane, which splits it into protons and electrons. The result of this is an electric current, after which the hydrogen combines with oxygen from atmospheric air that is blown across the other side of the membrane. The result product of that combination is water.
The electrical energy produced is channeled into a normal battery pack, which charges up and stores the energy to use for vehicle propulsion. This battery pack is very similar in design to those you would see on a regular battery electric vehicle. And regular electric motor.
SMR is how 98% of hydrogen vehicles get fuel https://en.m.wikipedia.org/wiki/Steam_reforming#SMR
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