Controllable decomposition of Ca(BH4)2 for reversible hydrogen storage

Literature Information

Publication Date 2017-02-20
DOI 10.1039/C7CP00448F
Impact Factor 3.676
Authors

D. Rentsch, A. Remhof


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Abstract

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.

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Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
CiteScore: 5.5
Self-citation Rate: 10.3%
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Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.

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