Lattice expansion due to hydrogen absorption into β-rhombohedral boron

β-Rhombohedral boron ( β -boron) represents one of the most popular and important allotropic forms of elemental boron . The unit cell of β-boron crystal consists of B 106.6 with a complicated and relatively open structure. We have previously reported the abrupt lattice expansion and shrinkage of β -boron crystal by thermal treatment above 700 K and photoirradiation at room temperature . Our recent studies, combined with X-ray diffraction and atom probe tomography experiments, suggest that the lattice expansion and shrinkage are related to the absorption and release of hydrogen into the structure. The results lead us to a new application of β -boron as a photo-switchable hydrogen storage material . • Volume expansion of β -boron cannot be explained by the interstitial atom hopping. • Abrupt volume expansion is due to the formation of boron sub-hydrides. • Qualitative increase in hydrogen content was seen in atom probe tomography . • Proposed β -boron as a photo-switchable hydrogen storage material.

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Publication Details

Journal
Solid State Sciences
Published
2025-03-18
DOI
https://doi.org/10.1016/j.solidstatesciences.2025.107907
Citations
1
Primary Topic
Boron and Carbon Nanomaterials Research
Type
article
Field-Weighted Citation Impact
0.52

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article

Lattice expansion due to hydrogen absorption into β-rhombohedral boron

Naoya Miyauchi, Kaoru Kimura, H. Sepehri‐Amin, Kohei Soga et al.
1 citations
Solid State Sciences
Boron and Carbon Nanomaterials Research
0.52
article

Lattice expansion due to hydrogen absorption into β-rhombohedral boron

Naoya Miyauchi, Kaoru Kimura, H. Sepehri‐Amin, Kohei Soga, Takanobu Hiroto, Tadakatsu Ohkubo, N. Uemura, Wataru Hayami, Tadashi Ogitsu
article en
1 citations

Abstract

β-Rhombohedral boron ( β -boron) represents one of the most popular and important allotropic forms of elemental boron . The unit cell of β-boron crystal consists of B 106.6 with a complicated and relatively open structure. We have previously reported the abrupt lattice expansion and shrinkage of β -boron crystal by thermal treatment above 700 K and photoirradiation at room temperature . Our recent studies, combined with X-ray diffraction and atom probe tomography experiments, suggest that the lattice expansion and shrinkage are related to the absorption and release of hydrogen into the structure. The results lead us to a new application of β -boron as a photo-switchable hydrogen storage material . • Volume expansion of β -boron cannot be explained by the interstitial atom hopping. • Abrupt volume expansion is due to the formation of boron sub-hydrides. • Qualitative increase in hydrogen content was seen in atom probe tomography . • Proposed β -boron as a photo-switchable hydrogen storage material.

Solid State SciencesVol. 163
Lawrence Livermore National Laboratory (US), Tokyo Medical University (JP), National Institute for Materials Science (JP), Kyoto University (JP), The Institute of Statistical Mathematics (JP), The University of Tokyo (JP)
U.S. Department of Energy, Ministry of Education, Culture, Sports, Science and Technology, Office of Science, Basic Energy Sciences, Lawrence Livermore National Laboratory, Division of Materials Sciences and Engineering
Openalex Percentile: Top 41%
Boron and Carbon Nanomaterials Research
0.52
DOIOpen Access PDFOpenAlex
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