Research on hydrogen-fueled cars may be one step closer to application because of the discovery of a new form of hydride. The material, lithium borohydride, is a promising energy storage system: it contains 18 weight percents of hydrogen, which makes it attractive for use in hydrogen-fueled cars. Its drawback is that it only releases hydrogen at temperatures above 300C. The team has found a new form of the compound that could possibly release hydrogen in mild conditions.