H2 Carrying Capacity by Considering Charging and Discharging Processes – Case Studies on Small Carbon- and Boron Nitride Nanotubes

Abstract

A fuel-cell is an electrochemical equipment in which hydrogen and oxygen would be transformed into water and electric power. As a result, no carbon-containing gas pollutant would be emitted. In the past two decades, the fuel-cell technology has been advanced,[1,2,3] but still there are some challenging problems to be addressed, e.g. the durability of the electrode, oxygen conduction efficiency, and the limited hydrogen storage capacity. The later issue – hydrogen storage – is in the center of interest in this work. The targeted hydrogen-carrying capacity is 6.5 %wt by 2010, as designated by the US Department of Energy.[4]