量研学術機関リポジトリ「QST-Repository」は、国立研究開発法人 量子科学技術研究開発機構に所属する職員等が生み出した学術成果（学会誌発表論文、学会発表、研究開発報告書、特許等）を集積しインターネット上で広く公開するサービスです。 Welcome to QST-Repository where we accumulates and discloses the academic research results(Journal Publications, Conference presentation, Research and Development Report, Patent, etc.) of the members of National Institutes for Quantum Science and Technology.
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Hydrogen absorbing alloys are widely investigated to develop high-performance hydrogen absorbing alloys because they are considered as potential hydrogen storage materials for several applications including fuel cell vehicles as well as stationary energy storage system. The hydrogen absorbing states of materials usually arise under the pressurized hydrogen gas environment. Hence, in-situ measurement is necessary to investigate the hydrogen absorbing states as well as hydrogen absorption/desorption processes. We have investigated structural changes of hydrogen absorbing alloys on hydrogen absorption/desorption processes using an in-situ x-ray diffraction measurement setup installed at BL22XU in SPring-8. By using a large area detector and high energy x-ray about 70 keV, we are capable of performing x-ray total scattering experiments to obtain the atomic pair distribution function, and can investigate the change in both average and local structures to discuss the degradation mechanism of the reversible hydrogen storage capacity.
会議概要（会議名, 開催地, 会期, 主催者等）
9th Pacific Rim International Conference on Advanced Materials and Processing (PRICM9)
In-situ measurement of average and local structures of hydrogen absorbing alloys using synchrotron radiation x-rays
