Relationship Between Microstructure and Hydrogen Storage Properties of Nanomaterials
Abstract
The influence of particle size, crystallite size, and lattice defects on hydrogen storage capacity and absorption–desorption kinetics of nanostructured materials are overviewed. It is shown that the particle and crystallite sizes and catalyst play two different roles in the sorption process. By decreasing the particle and crystallite sizes, the required diffusion path of hydrogen is drastically reduced that enhances the sorption kinetics significantly. At the same time, catalysts have a promoting effect on dissociation or recombination of hydrogen molecules on the particles' surfaces, and they also act as chemisorption sites. The lattice defects ...
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