Z Dehouche et al 2005 Nanotechnology 16 402 doi:10.1088/0957-4484/16/4/012
Z Dehouche1, L Lafi, N Grimard, J Goyette and R Chahine
Show affiliationsSingle-wall carbon nanotubes (SWNTs) were examined as catalysts for improving the hydrogen absorption and desorption properties of Ti/Zr-doped NaAlH4 hydride, proposed as a reversible hydrogen storage material. We studied the hydrogen charge and discharge characteristics and stability of sodium aluminium composites ball milled with carbon additives such as SWNTs, graphite or activated carbon (AX-21). The SWNT–NaAlH4 system was tested at 160 °C for up to 200 cycles, and the sorption kinetics were enhanced by a factor of four. Also, the catalyzed NaAlH4 hydride with graphite and activated carbon additives shows fast absorption and desorption kinetics. Our results indicate that by creating new hydrogen transition sites, the structure of carbon in the composites plays an important role in enhancing the hydrogen absorption and release rates.
82.65.+r Surface and interface chemistry; heterogeneous catalysis at surfaces
Surfaces, interfaces and thin films
Issue 4 (April 2005)
Received 12 November 2004, in final form 13 January 2005
Published 7 February 2005
Z Dehouche et al 2005 Nanotechnology 16 402
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Nikhil S Tambe and Bharat Bhushan 2005 Nanotechnology 16 2309
Ghim Wei Ho et al 2004 Nanotechnology 15 996
V Baranauskas et al 2004 Nanotechnology 15 1661
M Pientka et al 2004 Nanotechnology 15 163
Y Liu et al 2004 Nanotechnology 15 1368
Anisa Mnyusiwalla et al 2003 Nanotechnology 14 R9
Philip Ball 2002 Nanotechnology 13 R15
R S Davis 1995 Meas. Sci. Technol. 6 227