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  • Becky Carter posted in the group Tech

    2 weeks, 2 days ago
    HOW DO HYDROGEN FUEL CELLS WORK?
    Hydrogen fuel cells create electricity to power a battery and motor by mixing hydrogen and oxygen in specially treated plates, which are combined to form the fuel cell stack.

    Fuel cell stacks and batteries have allowed engineers to significantly shrink these components to even fit neatly inside a family car, although they are also commonly used to fuel buses and other larger vehicles.

    Oxygen is collected from the air through intakes, usually in the grille, and hydrogen is stored in aluminium-lined fuel tanks, which automatically seal in an accident to prevent leaks.

    These ingredients are fused, releasing usable electricity and water as byproducts and making the technology one of the quietest and most environmentally friendly available.

    Reducing the amount of platinum used in the stack has made fuel cells less expensive, but the use of the rare metal has restricted the spread of their use.

    Recent research has suggested hydrogen fuel cell cars could one day challenge electric cars in the race for pollution-free roads, however – but only if more stations are built to fuel them.

    Fuel cell cars can be refueled as quickly as gasoline-powered cars and can also travel further between fill-ups.

    Fuelling stations cost up to $2 million to build, so companies have been reluctant to build them unless more fuel cell cars are on the road.

    The U.S. Department of Energy lists just 34 public hydrogen fuelling stations in the country; all but three are in California.

    According to Information Trends, there were 6,475 FCV’s worldwide at the end of 2017.

    More than half were registered in California, which puts the U.S. (53 per cent) at the forefront for FCV adoption.

    Japan takes second place with 38 per cent, while Europe is at nine per cent.

    DailyMail

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