Hydrogen storage using nano pillared graphene

Hydrogen storage using nano pillared graphene Researchers are exploring new ways of using carbon nanotubes (CNTs) to store hydrogen in fuel cell vehicles. A unique hydrogen-storage structure consisting of parallel graphene sheets layers of carbon just one atom thick and stabilized by vertical columns of CNTs added with lithium ions has been suggested as a storage medium. Chemically modified graphene material has been prepared using several types of common electrolytes and graphene-based ultracapacitor cells have been constructed and electrically tested. The amount of electrical charge stored per weight (specific capacitance) of the graphene material has suggests the possibility of doubling the capacity compared to the existing ultracapacitors. The scientists' calculations has shown that the so-called "pillared graphene" could theoretically store up to 41 grams of hydrogen per liter which almost can approach the DOE's target of 45 grams of hydrogen per liter for transportation applications.