Electrospun Nanofibrous Materials and Their Hydrogen Storage

摘要: The hydrogen is a clean fuel source, which produces water vapor as the only exhaust gas when it burnt with oxygen. chemical energy density of (142 MJ/kg) at least three times larger than that other fuels. When electrochemically using cell system, efficiency can reach 50~60%, twice much thermal process because direct electron transfer from oxygen to in system not limited by Carnot [1]. However, volume 3000 higher gasoline room temperature and atmosphere molecular gas. Therefore, on-board storage need compact, light, safe affordable containment. condensation monolayer on solid leads maximum 1.3x10–5 mol/m2 adsorbed hydrogen. For automotive applications, US DOE required capacity greater 6.5 wt% ambient temperatures for release moderate pressures industrial applications. Hydrogen carbon materials very attractive field since high gravimetric capacities may be possible owing low specific weight surface area carbon. reversibly quantity nanostructure graphitic amounts 1.5 mass% per 1000 m2/g 77 K (liquid nitrogen temperature) On active 1315 m2/g, 2 was [2]. Carbon different nanostructures are available storage, e.g. nanofibers (CNF), graphite nanofiber (GNF), nanohorns, multiwalled nanotubes (MWNT), single-walled (SWNT).