| Project/Area Number |
17560042
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Applied physics, general
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| Research Institution | Yokohama National University |
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Principal Investigator |
YAMAGUCHI Masuhiro Yokohama National University, Faculty of Engineering, Professor, 大学院・工学研究院, 教授 (10018046)
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| Co-Investigator(Kenkyū-buntansha) |
YAMAMOTO Isao Yokohama National University, Faculty of Engineering, Associate Professor, 大学院・工学研究院, 助教授 (40242383)
SAKURAI Yoshiharu Japan Synchrotron Radiation Research Institute, Senior researcher, 主幹研究員 (90205815)
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| Project Period (FY) |
2005 – 2006
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| Project Status |
Completed (Fiscal Year 2006)
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| Budget Amount *help |
¥3,500,000 (Direct Cost: ¥3,500,000)
Fiscal Year 2006: ¥1,700,000 (Direct Cost: ¥1,700,000)
Fiscal Year 2005: ¥1,800,000 (Direct Cost: ¥1,800,000)
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| Keywords | activated carbon / hydrogen-absorbing materials / Compton scattering / carbon nano-tube / graphite fiber |
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| Research Abstract |
The purpose of this research project is to investigate the microscopic state of hydrogen which is absorbed or adsorbed by light element-based hydrogen-absorbing materials. It is considered that hydrogen is adsorbed by carbon-based materials in the state of hydrogen molecules, but nobody has confirmed this by microscopic methods so far. In this work, we intended to make clear the state of hydrogen in hydrogen-adsorbed activated carbon (AC) and single wall carbon nano-tubes (SWCNTs) by the Compton scattering method. This method is unique to measure the electronic structure of complicated materials under any gas atmosphere. In the experiment, we developed the in situ scattering chamber in which Compton scattering can be performed under the influence of hydrogen at blow temperatures, as a consequence, we measured the Compton profiles of hydrogen-adsorbed AC (CH0.17, C0.10) and hydrogen-adsorbed SWCNTs (CH0.06, CH0.03). Then, the Compton profile difference (CHx-C), which directly represents the state of hydrogen in the samples, agreed with the theoretically calculated Compton profile of hydrogen molecules. We have first confirmed by a microscopic method that hydrogen is adsorbed by AC or SWCNTs in the stat of hydrogen molecules. This method is very adequate to investigate the microscopic state of adsorbed or absorbed hydrogen.
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