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Modified Carbon Cryogel-Ammonia Borane Nanocomposites for Hydrogen Storage

Published online by Cambridge University Press:  01 February 2011

Saghar Sepehri ,
Betzaida Batalla Garcia ,
Qifeng Zhang  and
Guozhong Cao
Saghar Sepehri
Affiliation:
sepehri@u.washington.edu, University of Washington, Material Sience and Engineering, 302 Roberts Hall, Box 352120, Seattle, WA, 98195, United States, 206-412-2335
Betzaida Batalla Garcia
Affiliation:
bbg5@u.washington.edu, University of Washington, Material Sience and Engineering, 302 Roberts Hall, Box 352120, Seattle, WA, 98195, United States
Qifeng Zhang
Affiliation:
qfzhang@u.washington.edu, University of Washington, Material Sience and Engineering, 302 Roberts Hall, Box 352120, Seattle, WA, 98195, United States
Guozhong Cao
Affiliation:
gzcao@u.washington.edu, University of Washington, Material Sience and Engineering, 302 Roberts Hall, Box 352120, Seattle, WA, 98195, United States
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Abstract

This paper reports the synthesis and characterization of coherent Boron/Nitrogen –doped –carbon cryogels- ammonia borane nanocomposites for hydrogen storage. Resorcinol formaldehyde derived doped carbon cryogels (CC) were obtained via chemical modification.CC- ammonia-borane nanocomposites were made by incorporation of ammonia borane (AB), in CCs. Nitrogen sorption analysis, scanning electron microscopy, and X-ray photoelectron spectroscopy, are used to investigate the structure and morphology of the modified CCs. Differential scanning calorimetry is used to study the dehydrogenation of coherent doped-CC-AB nanocomposites. Modified CCs show higher mesoporosity, and more homogeneous porous structure compared to undoped CCs. Also, dehydrogenation kinetics of nanocomposites is enhanced as compared to neat AB. Possible nanoscale and catalytic effects of nanocomposites in improved dehydrogenation kinetics are discussed.

Keywords

aerogelnanostructuredopant
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1042: Symposium S – Materials and Technology for Hydrogen Storage , 2007 , 1042-S07-01
Copyright
Copyright © Materials Research Society 2008

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