Ni–B-doped NaAlH4hydrogen storage materials prepared by a facile two-step synthesis method

By directly introducing Ni–B into NaAlH4 system using a facile two-step synthesis method, the effects of Ni–B on NaAlH4 were systematically investigated. NaAlH4 can be completely formed after 30 h milling under 1 MPa hydrogen pressure. In addition, the dehydrogenation kinetics of as-prepared NaAlH4...

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Published in稀有金属：英文版 no. 9; pp. 679 - 682
Main Author Wen-Bin Li Li Li Qiu-Li Ren Yi-Jing Wang Li-Fang Jiao Hua-Tang Yuan
Format Journal Article
LanguageEnglish
Published 2015
Subjects
catalyst;Dehydrogenat
NaAlH4;Hydrogen
storage;Ni–B
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Summary:By directly introducing Ni–B into NaAlH4 system using a facile two-step synthesis method, the effects of Ni–B on NaAlH4 were systematically investigated. NaAlH4 can be completely formed after 30 h milling under 1 MPa hydrogen pressure. In addition, the dehydrogenation kinetics of as-prepared NaAlH4 after different milling times were investigated. As the dehydrogenation temperature rises,both the hydrogen desorption capacity and dehydrogenation rate quickly increase. The apparent activation energy E a for Ni–B-doped NaAlH4 is calculated to be 61.91 k J mol-1 for the first dehydrogenation step. More importantly, the dehydrogenation temperature of as-prepared NaAlH4 nanocrystalline can be reduced to about 100 °C.
Bibliography:Wen-Bin Li;Li Li;Qiu-Li Ren;Yi-Jing Wang;Li-Fang Jiao;Hua-Tang Yuan;The Energy Department of Chemical Engineering, Tianjin Bohai Vacational Technical College;Institute of New Energy Material Chemistry, Key Laboratory of Advanced Energy Materials Chemistry (MOE), Tianjin Key Laboratory of Metal and Molecule-Based Material Chemistry,Nankai University
NaAlH4;Hydrogen storage;Ni–B catalyst;Dehydrogenat
By directly introducing Ni–B into NaAlH4 system using a facile two-step synthesis method, the effects of Ni–B on NaAlH4 were systematically investigated. NaAlH4 can be completely formed after 30 h milling under 1 MPa hydrogen pressure. In addition, the dehydrogenation kinetics of as-prepared NaAlH4 after different milling times were investigated. As the dehydrogenation temperature rises,both the hydrogen desorption capacity and dehydrogenation rate quickly increase. The apparent activation energy E a for Ni–B-doped NaAlH4 is calculated to be 61.91 k J mol-1 for the first dehydrogenation step. More importantly, the dehydrogenation temperature of as-prepared NaAlH4 nanocrystalline can be reduced to about 100 °C.
11-2112/TF
ISSN:1001-0521
1867-7185