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In-Operando Neutron Diffraction Studies of Transition Metal Hydrogen Storage Materials

Authors

  • Kazuya Kamazawa,

    1. Toyota Central Research and Development, Laboratories Inc., Nagakute, Aichi 480-1192, Japan
    2. J-PARC Center, Japan Atomic Energy Agency (JAEA), Tokai, Ibaraki 319-1195, Japan
    Current affiliation:
    1. Comprehensive Research Organization for Science and Society (CROSS), Tokai, Ibaraki 319-1106, Japan
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  • Masakazu Aoki,

    1. Toyota Central Research and Development, Laboratories Inc., Nagakute, Aichi 480-1192, Japan
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  • Tatsuo Noritake,

    1. Toyota Central Research and Development, Laboratories Inc., Nagakute, Aichi 480-1192, Japan
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  • Kazutoshi Miwa,

    1. Toyota Central Research and Development, Laboratories Inc., Nagakute, Aichi 480-1192, Japan
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  • Jun Sugiyama,

    1. Toyota Central Research and Development, Laboratories Inc., Nagakute, Aichi 480-1192, Japan
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  • Shin-ichi Towata,

    Corresponding author
    1. Toyota Central Research and Development, Laboratories Inc., Nagakute, Aichi 480-1192, Japan
    • Toyota Central Research and Development, Laboratories Inc., Nagakute, Aichi 480-1192, Japan
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  • Mamoru Ishikiriyama,

    1. Advanced Material Engineering Division, TOYOTA MOTOR CORPORATION, Higashi-fuji Technical Center, Japan
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  • Samantha K. Callear,

    1. ISIS Facility, STFC, Rutherford Appleton Laboratory, Chilton, Oxfordshire, OX11 0QX, UK
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  • Martin O. Jones,

    1. ISIS Facility, STFC, Rutherford Appleton Laboratory, Chilton, Oxfordshire, OX11 0QX, UK
    2. Inorganic Chemistry Laboratory, South Parks Road, University of Oxford, Oxford, OX1 3QR, UK
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  • William I. F. David

    Corresponding author
    1. ISIS Facility, STFC, Rutherford Appleton Laboratory, Chilton, Oxfordshire, OX11 0QX, UK
    2. Inorganic Chemistry Laboratory, South Parks Road, University of Oxford, Oxford, OX1 3QR, UK
    • ISIS Facility, STFC, Rutherford Appleton Laboratory, Chilton, Oxfordshire, OX11 0QX, UK.
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Abstract

original image

Neutron diffraction studies of hydrogen absorption and desorption (non-isotopically enriched) in the metal hydride Ti25Cr50V20Mo5Hx, reveal the origin of the reduction in capacity exhibited by this material on cycling. The sequestered hydrogen is principally located in the octahedral and tetrahedral interstitial sites in the basal plane, while local diffusion along the unique tetragonal axis appears to be preferred.

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