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Investigating the decomposition pathways and hydrogen storage capacity of V, Cr, and Fe amino borohydrides

Published online by Cambridge University Press:  23 May 2016

Zachary J. Huba ,
Matilde Portnoy ,
Kristen A. Colwell  and
Albert E. Epshteyn
Zachary J. Huba*
Affiliation:
NRC Postdoctoral Associate, Chemistry Division, US Naval Research Laboratory, Washington, DC 20375
Matilde Portnoy
Affiliation:
HBCU Summer Student, Chemistry Division, US Naval Research Laboratory, Washington, DC
Kristen A. Colwell
Affiliation:
NREIP Summer Student, Chemistry Division, US Naval Research Laboratory, Washington, DC
Albert E. Epshteyn
Affiliation:
Chemistry Division, US Naval Research Laboratory, Washington DC 20375
*
*(Email: [email protected])
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Abstract

Cr, V, and Fe amino borohydride complexes were synthesized using a solution based approach. Thermogravimetric Analysis with simultaneous Differential Scanning Calorimetry was used to investigate their decomposition behavior. The synthesized Cr and Fe complexes exhibited significant hydrogen release around 100 °C. The synthesized V complex showed a large mass loss at temperatures between 50 °C and 100 °C and release of amine byproducts. FTIR of decomposed intermediates showed the decomposition of Cr amino borohydride occurs through the simultaneous loss of hydrogen from both the borohydride and amino ligands, while the Fe complex displays preferential dehydrogenation of the borohydride over the amino ligand. The decomposed products take on a BN type structure when heated to 400 °C.

Keywords

hydrogenationthermogravimetric analysis (TGA)energy storage
Type
Articles
Information
MRS Advances , Volume 1 , Issue 42: Energy and Environment , 2016 , pp. 2881 - 2886
Copyright
Copyright © Materials Research Society 2016 

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References

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