Platts, Astute New Energy, Bllomberg and now The Economist
Conventional wisdom holds that battery-powered cars are the future of motoring. But Hyundai, a big South Korean vehicle-maker, is not so sure. Over the past few months it has been running a worldwide public-relations campaign extolling the virtues of an alternative source of electrical power—fuel cells. Instead of storing and then releasing electricity gathered from the mains in the way that a battery does, a fuel cell generates current from a chemical reaction between hydrogen and oxygen. The oxygen comes from the air. The hydrogen, suitably compressed, is stored in a tank on board the vehicle, and is replenished at a filling station, like petrol. Unlike a battery, a fuel cell does create exhaust. But that exhaust is simply the reaction product of hydrogen and oxygen, namely water.
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