Controllable decomposition of Ca(BH4)2 for reversible hydrogen storage.
- Yan Y Interdisciplinary Nanoscience Center (iNANO), Aarhus University, DK-8000 Aarhus C, Denmark. yigang.yan@inano.au.dk and EMPA, Swiss Federal Laboratories for Materials Science and Technology, CH-8600 Dübendorf, Switzerland.
- Rentsch D EMPA, Swiss Federal Laboratories for Materials Science and Technology, CH-8600 Dübendorf, Switzerland.
- Remhof A EMPA, Swiss Federal Laboratories for Materials Science and Technology, CH-8600 Dübendorf, Switzerland.
- 2017-03-07
Published in:
- Physical chemistry chemical physics : PCCP. - 2017
English
Ca(BH4)2 could reversibly store 9.6 wt% hydrogen based on the overall reaction of Ca(BH4)2 → 1/3CaB6 + 2/3CaH2 + 10/3H2. Formation of CaB6 instead of elemental boron and/or high boranes (e.g. CaB12H12) in the dehydrogenation process is crucial for rehydrogenation. Here, we reported two experimental protocols regarding how to form CaB6 from the decomposition of Ca(BH4)2: (1) decomposition below the melting point, e.g. 350 °C via CaB2H6 to CaB6 and (2) decomposition above the melting point, e.g. 400 °C via elemental boron to CaB6.
- Language
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- English
- Open access status
- green
- Identifiers
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- DOI 10.1039/c7cp00448f
- PMID 28262887
- Persistent URL
- https://sonar.ch/global/documents/208664
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