Skip to main content Accessibility help
×
Home

Synthesis and Characterization of Nanoscale Transition Metal Complex for Hydrogen Storage

  • Sesha S. Srinivasan (a1), Matthew T. Smith (a1), Deepak Deshpande (a2), Eias K. Stefanakos (a1), Yogi Goswami (a2), Michael Jurczyk (a1), Arun Kumar (a1) and Ashok Kumar (a1)...

Abstract

The development of light weight hydrogen storage systems with high volumetric and gravimetric hydrogen densities is indeed essential for the on-board fuel cell vehicular applications [1]. Among the different hydrogen storage systems designed and developed so far, Ti- doped sodium aluminum hydrides exhibit potential promise of reversible hydrogen storage capacity (4-5 wt.%) at moderate temperatures [2,3]. However, the poor cyclic stability of these hydrides due to the partial reversibility of the two step reactions necessitates the development of exotic materials or tailoring the known hydride systems. On the other hand, transition metal complex hydrides, TMHx (T = Mg; M = Fe, Co, Ni) have also been identified as potential candidates for hydrogen storage [4-6] and/or analogous to alanates [7]. These hydrides especially Mg2FeH6, have shown excellent cyclic capacities (more than 500 cycles) even without a catalyst [8]. Besides, Mg2FeH6 possesses the highest volumetric and gravimetric hydrogen densities of 150 kg/m3 and 5.6 wt.% respectively [9]. However, at low temperatures, the rate of release of hydrogen and the effective reversible hydrogen capacity seems poor. Recent reports declared that the enhancement in the cycling kinetics and reduction in the operating temperature is very much possible by using a distorted nano-scale Mg structure [10, 11], doping the host lattice with Ti- species and/or lattice substitution [12]. Keeping these facts in view, the present investigation aims to improve the sorption kinetics and thermodynamics of Mg2FeH6, by 1) preparing nano-scale Mg-Fe-H system using mechano-chemical synthesis process, 2) surface localized catalyst (Ti- species) doping and 3) cationic substitution of Na+/Li+ for Mg2+ by incorporating NaH/LiH. The synergistic behavior of the tailored nano-scale transition metal complex for hydrogen storage is outlined.

Copyright

References

Hide All
[1] Report of the Basic Energy Science Workshop on Hydrogen Production, Storage and use prepared by Argonne National Laboratory, May 13-15 (2003).
[2] Bogdanovic, B., Schwickardi, M., International Patent WO97/03919 (1997)
[3] Jensen, C.M., Zidan, R., US Patent 6,471,935 B2 (2002)
[4] Selvam, P., Yvon, K., Int. J. Hydrogen Energy, 16, 9 (1991) 615
[5] Huot, J., S, Boily, Akiba, E., Schulz, R., J. Alloys Comp., 280 (1998) 306
[6] Vegge, T., Jensen, Lise S.H, Bonde, J., Munter, T.R., Norskov, J.K., J. Alloys Comp., 386 (2005) 17
[7] Bogdanovic, B. et al, Phys. Chem. Chem. Phys., 6 (2004) 43694374
[8] Bogdanovic, B., Reiser, A., Schlichte, K., Spliethoff, B., Tesche, B., J. Alloys Comp., 345 (2002) 7789
[9] Zuttel, A., Materialstoday, September (2003) 2433
[10] http://europa.eu.int/comm/research/energy/pdf/efchp hydrogen4.pdf
[11] Herrich, M., Ismail, N., Lyubina, J., Handstein, A., Pratt, A., Gutfleisch, O., Mat. Sci. Engg. B108 (2004) 2832
[12] http://eere.energy.gov/hydrogenandfuelcells/pdfs/iiib2_gross.pdf

Synthesis and Characterization of Nanoscale Transition Metal Complex for Hydrogen Storage

  • Sesha S. Srinivasan (a1), Matthew T. Smith (a1), Deepak Deshpande (a2), Eias K. Stefanakos (a1), Yogi Goswami (a2), Michael Jurczyk (a1), Arun Kumar (a1) and Ashok Kumar (a1)...

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed