Nanotech 2014 Vol. 3
Nanotech 2014 Vol. 3
Nanotechnology 2014: Electronics, Manufacturing, Environment, Energy & Water

Solar Power, Fuel Cells, Renewables & Carbon Capture Chapter 5

Molecular Hydrogen Storage in Fullerenes for Use on Board Fuel Cell Vehicles – A Density Functional Theory Study

Authors: D.J. Durbin, N.L. Allan, C. Malardier-Jugroot

Affilation: Royal Military College, Canada

Pages: 387 - 390

Keywords: carbon nanomaterials, fullerenes, curvature, confinement, hydrogen storage, fuel cell vehicles

Abstract:
Hydrogen gas is a potential fuel to replace gasoline on board vehicles. However, viable storage methods must be developed. Carbon nanomaterials are promising because they are cheap, lightweight and abundant but carbon-hydrogen physisorption is weak and chemisorption interactions are undesirable. The present project investigates methods of strengthening C-H2 physisorption without introducing chemisorption by activation of carbon nanomaterials using curvature. Confinement and doping are also examined (results not shown). Fullerenes of varying size with different degrees of curvature (Cn, n = 20, 60, 180, 540, 960) were investigated. Favourable physisorption was observed with H2 placed in C60 and C180 where H2 was in a position that allowed interaction with many carbon atoms. In contrast, H2 in C20 showed strong repulsive C-H2 interactions and H2 in C540 and C960 (large fullerenes with flat sides) experienced negligible interaction. This suggests that hydrogen can be stored in carbon nanomaterials only when the curvature allows H2 to interact with many carbon atoms and the C-H2 distance is desirable. Upon optimization of these conditions, carbon nanomaterials have potential for H2 storage. This will allow hydrogen to be stored safely and cheaply on board fuel cell vehicles.


ISBN: 978-1-4822-5830-1
Pages: 588
Hardcopy: $209.95