ABSTRACT
As a universal transportation fuel that can be generated from water and any energy source, hydrogen is a leading candidate to supplant petroleum with the potential to ultimately eliminate petroleum dependence, associated air pollutants, and greenhouse gases [1]. The predominant technical barrier limiting widespread use of hydrogen automobiles is storing enough hydrogen fuel on board to achieve sufcient (500+ km) driving range in a compact, lightweight, rapidly refuelable, and cost-effective system.
