Mg-based nanocomposites with high capacity and fast kinetics for hydrogen storage

Yao, Xiangdong, Wu, Chengzhang, Du, Aijun, Lu, Gao Qing, Cheng, Huiming, Smith, Sean C., Zou, Jin, and He, Yinghe (2006) Mg-based nanocomposites with high capacity and fast kinetics for hydrogen storage. Journal of Physical Chemistry Part B, 110 (24). pp. 11697-11703.

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Abstract

Magnesium and its alloys have shown a great potential in effective hydrogen storage due to their advantages of high volumetric/gravimetric hydrogen storage capacity and low cost. However, the use of these materials in fuel cells for automotive applications at the present time is limited by high hydrogenation temperature and sluggish sorption kinetics. This paper presents the recent results of design and development of magnesium-based nanocomposites demonstrating the catalytic effects of carbon nanotubes and transition metals on hydrogen adsorption in these materials. The results are promising for the application of magnesium materials for hydrogen storage, with significantly reduced absorption temperatures and enhanced ab/desorption kinetics. High level Density Functional Theory calculations support the analysis of the hydrogenation mechanisms by revealing the detailed atomic and molecular interactions that underpin the catalytic roles of incorporated carbon and titanium, providing clear guidance for further design and development of such materials with better hydrogen storage properties.

Item ID: 4647
Item Type: Article (Research - C1)
ISSN: 1520-5207
Keywords: magnesium hydride; nanocrystalline composite; nanosized catalyst; hydrogen storage; mesoporous carbons
Date Deposited: 17 Jun 2009 05:24
FoR Codes: 10 TECHNOLOGY > 1007 Nanotechnology @ 30%
09 ENGINEERING > 0904 Chemical Engineering > 090407 Process Control and Simulation @ 40%
09 ENGINEERING > 0912 Materials Engineering > 091202 Composite and Hybrid Materials @ 30%
SEO Codes: 85 ENERGY > 8506 Energy Storage, Distribution and Supply > 850699 Energy Storage, Distribution and Supply not elsewhere classified @ 50%
85 ENERGY > 8598 Environmentally Sustainable Energy Activities > 859899 Environmentally Sustainable Energy Activities not elsewhere classified @ 40%
85 ENERGY > 8507 Energy Conservation and Efficiency > 850702 Energy Conservation and Efficiency in Transport @ 10%
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