Fuel Cell Being Tested The new fuel cell being tested in the lab. Credit: Imperial College London Imperial researchers have developed a new hydrogen fuel cell that uses iron instead of rare and costly platinum, enabling greater use of the technology. Hydrogen fuel cells convert hydrogen to electricity with just water vapor as a byproduct, making them an appealing green alternative for portable power, particularly for vehicles. However, the expense of one of the primary components has impeded its broad adoption. The fuel cells rely on a catalyst made of platinum, which is expensive and scarce, to assist the reaction...