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A synergistic effect between nanoconfinement of carbon aerogels and catalysis of CoNiB nanoparticles on dehydrogenation of LiBH4
- Source :
- International Journal of Hydrogen Energy. 39:917-926
- Publication Year :
- 2014
- Publisher :
- Elsevier BV, 2014.
-
Abstract
- A synergistic effect of nanoconfinement and catalyzing is a new strategy to enhance the dehydrogenation properties of complex hydrides. Herein, LiBH4 has been infiltrated into a CoNiB-loaded carbon aerogels system (donated as LiBH4@CA@CoNiB). It is found that the desorption performances of LiBH4 are significantly strengthened. The onset desorption temperature of LiBH4@CA@CoNiB is decreased to 192 °C, and majority of the liberation occurs at about 320 °C, much lower than that of pure LiBH4. Also, about 15.9 wt% H2 could be released below 600 °C. Furthermore, LiBH4 doped with CA@CoNiB exhibits an excellent desorption kinetics, with a capacity of 9.33 wt% H2 released in 30 min at 350 °C, while only 2.13 wt% H2 is gained for bulk LiBH4. In addition, the apparent activation energy (Ea) is reduced sharply from 59.00 kJ/mol (pure LiBH4) to 46.39 kJ/mol.
- Subjects :
- Renewable Energy, Sustainability and the Environment
Chemistry
Inorganic chemistry
Doping
Energy Engineering and Power Technology
Nanoparticle
chemistry.chemical_element
Activation energy
Condensed Matter Physics
Catalysis
Fuel Technology
Chemical engineering
Desorption
Liberation
Dehydrogenation
Carbon
Subjects
Details
- ISSN :
- 03603199
- Volume :
- 39
- Database :
- OpenAIRE
- Journal :
- International Journal of Hydrogen Energy
- Accession number :
- edsair.doi...........fc2d18823b6c412cf47d3b47e1f68471