DATE2024.11.14 #Press Releases
Visualizing hydrogen configurations in crystals with quantum beams
-- Hopes for Efficient Hydrogen Storage and Novel Physical Properties
Summary
A research group led by Associate Professor Takahiro Ozawa and Professor Katsuyuki Fukutani at the Institute of Industrial Science, The University of Tokyo, Associate Professor Ryota Shimizu and Professor Taro Hitosugi at the School of Sciences, The University of Tokyo (and Project Professor School of Materials and Chemical Technology, Institute of Science Tokyo), Associate Professor Ikutaro Hamada at Graduate School of Mathematical Sciences, Osaka University, and Project Lecturer Daiichiro Sekiba at the Graduate School of Science, University of Tsukuba, has developed a structural analysis method that combines ion channeling technology with the nuclear reaction method used for the quantitative measurement of hydrogen.
In this study, we analyzed the structure of hydrogen in titanium nanofilm hydrides and found that hydrogen co-occupies two different lattice sites. Using exhaustive first-principles electronic structure calculations, the physical origin of these structures was elucidated in terms of electronic structure. Furthermore, we have shown that the lattice sites of hydrogen can be controlled by using isotope effects. The results of this research are expected to be useful for the development of new physical properties by controlling the arrangement of hydrogen and for the development of efficient hydrogen storage materials.
This research result was published in Nature Communications at 19:00 JST on November 14.
Figure: Two-dimensional yield map of hydrogen signal and crystal structure viewed from the incident direction
Links: The Institute of Industrial Science, The University of Tokyo, Osaka University, The University of Tsukuba, The University of Science, Tokyo（in Japanese）
Journal
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Journal name Nature CommunicationsTitle of paper