1992 Fiscal Year Final Research Report Summary
Fabrication of thin film of fast ion conductor by excimer laser CVD method
| Project/Area Number |
03555163
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| Research Category |
Grant-in-Aid for Developmental Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
無機工業化学・無機材料工学
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| Research Institution | TOHOKU UNIVERSITY |
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Principal Investigator |
ARASHI Haruo Research Institute for Scientific Measurements, Tohoku University, Associate Professor, 科学計測研究所, 助教授 (80006155)
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| Co-Investigator(Kenkyū-buntansha) |
YAMAUCHI Yasuhiro Mitsubishi Heavy Industries, LTD Nagasaki R&D Center, Senior Researcher, 長崎研究所, 主任
YOSHIHARA Akira Research Institute for Scientific Measurements, Tohoku University, Research Assi, 科学計測研究所, 助手 (40166989)
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| Project Period (FY) |
1991 – 1992
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| Keywords | CVD / Excimer Laser / Fast Ion Conductor / Thin Film |
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| Research Abstract |
Mixed electronic-ionic conductors have many applications such as electrodes and a membrane for gas separation. ZrO_2-TiO_2-Y_2O_3 system exhibits a mixed conduction. Electrical properties in this system of sintered specimens have already been investigated and it was found that this system was the promising material as a membrane for a direct water splitting at high temperatures to produce hydrogen. To improve these properties, especially to diminish the resistance, thin films of ZrO_2-TiO_2-Y_2O_3 were prepared by laser CVD. The deposited films of this system show (100) orientation and it is independent to the kind of substrates. The range of the TiO_2 solubility to YSZ is considerably spread by using this preparation technique. From this result, it is expected that the high concentration TiO_2 doped YSZ exhibits mixed conduction with very high electronic conductivity. The total conductivity of YSZ containing 53 mol% TiO_2 was measured by AC impedance method.
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