| Project/Area Number |
23656384
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Physical properties of metals
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| Research Institution | Kyoto University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
MORI Kazuhiro 京都大学, 原子炉実験所, 准教授 (40362412)
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| Project Period (FY) |
2011 – 2012
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| Project Status |
Completed (Fiscal Year 2012)
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| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2012: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2011: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
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| Keywords | 原子 / 電子構造 / ナノ化 / メカニカルミリング / 中性子散乱 / 小角散乱 / 表面構造 / ナノ構造 / Ｘ線回折 / 原子配列 / 中性子小角散乱 / X線回折 |
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| Research Abstract |
This study is designed to improve the absorption and desorption properties of hydrogen in present hydrogen storage materials and to invent an out-of-the-box hydrogen storage materialby using nano-technology. In this study, the surface of the nano-porous material is a key point to improve the absorption and desorption properties of hydrogen and disperse the strain. The surface structure and its change during the hydrogen absorption and desorption process was investigated by the advantage of the neutron small angle scattering (SANS). In the ex- and in-situ SANS experiments on nano Ti0.31Cr0.33V0.36, the relationship between the surface fractal dimension Ds and the hydrogen content H/M was studied. This variation of Ds with H/M was explained by considering the volume expansion in the crystal structure. When we use D instead of H, the surface morphology became to be much different. The result allows us to get new information that the diffusion rate of H is faster than that of D in the surface of nano-particles.
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