Hostname: page-component-7479d7b7d-qs9v7 Total loading time: 0 Render date: 2024-07-10T12:52:07.614Z Has data issue: false hasContentIssue false
  • English
  • Français

Thermal and Volumetric Studies of Complex Chemical Hydrides: Li-modified/Ti- doped Mg2FeH6, Sonicated LiNH2/LiH and Zn- doped NaBH4

Published online by Cambridge University Press:  01 February 2011

Sesha Srinivasan ,
Lisa McElwee-White ,
Elias Stefanakos ,
Yogi Goswami  and
Seth Dumbris
Sesha Srinivasan
Affiliation:
sesha@eng.usf.edu, University of South Florida, 4202 E. Fowler Ave, Tampa, FL, 33620, United States
Lisa McElwee-White
Affiliation:
lmwhite@chem.ufl.edu, University of Florida, Department of Chemistry, United States
Elias Stefanakos
Affiliation:
stefanak@eng.usf.edu
Yogi Goswami
Affiliation:
goswami@ufl.edu
Seth Dumbris
Affiliation:
dumbris@chem.ufl.edu, University of Florida, Department of Chemistry, United States
Get access

Abstract

Light weight hydrogen storage systems are indeed essential for the on-board automotive vehicular applications. Complex chemical hydrides bearing light elements such as Li, Na, Mg etc. and their catalytic doping with transition metal species are presently being investigated. The Li- modified Mg2FeH6 structure have been thermally characterized using DSC and TGA techniques. It is interesting to notice that the reduction in the decomposition temperature of about 100° C has been unambiguously observed for the Li modified Mg2FeH6. Besides, there is an enhancement in sorption kinetics for the Ti- doped Mg2FeH6. The role of Ti- species on the dehydrogenation and rehdyrogenation properties of NaAlH4 have been explored by heat flow measurements using high pressure differential scanning calorimetry. We have also developed the Li-amide/LiH system by sonicated process and studied their PCT characteristics. A new class of hydrogen storage system Zn(BH4)2 with theoretical hydrogen capacity of 8.4 wt.% have been synthesized and we have determined their gravimetric and volumetric characteristics.

Keywords

catalytichydrogenationmechanical alloying
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 885: Symposium A – The Hydrogen Cycle – Generation, Storage and Fuel Cells , 2005 , 0885-A07-03
Copyright
Copyright © Materials Research Society 2006

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1. Schlapbach, L., Zuttel, A., Nature, 414, 353 (2001)Google Scholar
2. Bogdanovic, B., Schwikardi, M., J. Alloys Compd., 253–254, 1–9 (1997)Google Scholar
3. Bogdanovic, B., Schwikardi, M., International Patent, WO97/03919 (1997)Google Scholar
4. Jensen, C.M., Zidan, R., US Patent, 6,471,935 B2 (2002)Google Scholar
5. Chen, P., Xiong, Z., Luo, J., Lin, J., Tan, K.L., Nature, 420, 21 (2002)Google Scholar
6. Grochala, W., Edwards, P.P., Chem. Rev. 1283–1315, 104 (2004)Google Scholar