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Lattice expansion due to hydrogen absorption into β-rhombohedral boron

Journal Article · · Solid State Sciences
 [1];  [1];  [2];  [1];  [1];  [1];  [3];  [4];  [5]
  1. National Institute for Materials Science, Tsukuba, Ibaraki (Japan)
  2. Kyoto University of Advanced Science (Japan)
  3. Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
  4. Tokyo Univ. of Science (Japan)
  5. National Institute for Materials Science, Tsukuba, Ibaraki (Japan); The Institute of Statistical Mathematics, Tokyo (Japan); Univ. of Tokyo, Kashiwa (Japan)

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 B106.6 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. In conclusion, the results lead us to a new application of β-boron as a photo-switchable hydrogen storage material.

Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division (MSE); Ministry of Education, Culture, Sports, Science and Technology of Japan
Grant/Contract Number:
AC52-07NA27344
OSTI ID:
2998157
Alternate ID(s):
OSTI ID: 2539948
Report Number(s):
LLNL--PROC-2012274
Journal Information:
Solid State Sciences, Journal Name: Solid State Sciences Vol. 163; ISSN 1293-2558
Publisher:
Elsevier BVCopyright Statement
Country of Publication:
United States
Language:
English

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