Journal
JOURNAL OF PHYSICAL CHEMISTRY C
Volume 112, Issue 14, Pages 5651-5657Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jp711066t
Keywords
-
Ask authors/readers for more resources
Enhanced kinetics for hydrogen exchange in LiBH4 incorporated within nanoporous carbon scaffolds are described. Dehydrogenation rates up to 50 times faster than those in the bulk material are measured at 300 degrees C in a nanostructured hydride formed by filling a porous carbon aerogel host, with LiBH4. Furthermore, the activation energy for hydrogen desorption, measured using the approach developed by Ozawa, is reduced from 146 kJ/mol for bulk LiBH4 to 103 kJ/mol for nanostructured LiBH4, and the faster kinetics result in desorption temperatures that are reduced by up to 75 degrees C. In addition, nanostructured hydrides, exhibit increased cycling capacity over multiple sorption cycles. This work demonstrates that confinement within a porous scaffold host is a promising approach for enhancing hydrogen uptake and release in reversible light-metal complex hydrides.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available