Research on fabrication of high-performance hydrogen isotope storage alloy by beryllium intermetallic compounds

2015 Fiscal Year Final Research Report

• Project/Area Number: 26820402
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Nuclear fusion studies
• Research Institution: Japan Atomic Energy Agency
• Principal Investigator: KIM JAEHWAN 国立研究開発法人日本原子力研究開発機構, 核融合研究開発部門 六ヶ所核融合研究所, 研究員 (80613611)
• Project Period (FY): 2014-04-01 – 2016-03-31
• Keywords: 水素吸蔵合金 / ベリライド / 第一原理計算 / プラズマ焼結法

Outline of Final Research Achievements

For a research of fabrication technology on high performance hydrogen isotope storage alloys, Be2Ti, Be2V, and Be2Zr single phase materials were successfully fabricated using by new process. In addition, as a result of a catalyst effect on hydrogen storage capacity in the beryllides, it was obvious that catalysts addition deteriorated the capacity since those formed Be or Ti compounds. In parallel to surveying fabrication technologies, simulation has been carried out with regards to stability of hydrogen atom with an evaluation of its solution energy. A simulation based on first-principles calculation indicated the presence of two hydrogen trap sites, tetrahedral and center of triangle with solution energies of -0.52 and -0.05 eV, respectively, implying that the maximum trap site of hydrogen with 5.4 wt.%

Free Research Field

核融合炉・機能材、材料合成