| Project/Area Number |
13650741
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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 |
Inorganic materials/Physical properties
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| Research Institution | Chiba Institute of Technology |
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Principal Investigator |
YAMAGUCHI Sadae Chiba Institute of Technology, Research Institute, Professor, 研究所, 教授 (80005892)
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| Co-Investigator(Kenkyū-buntansha) |
YUGAMI Hiroo Tohoku Univeresity, Faculty of Engineering, Professor, 工学部, 教授 (60192803)
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| Project Period (FY) |
2001 – 2002
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| Project Status |
Completed (Fiscal Year 2002)
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| Budget Amount *help |
¥3,500,000 (Direct Cost: ¥3,500,000)
Fiscal Year 2002: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 2001: ¥2,800,000 (Direct Cost: ¥2,800,000)
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| Keywords | Perovskite-type oxide / Proton conductor / Hydrogen permeable metal membrane / Proton conductivity / Fuel cell / Functionally Graded Materials / プロトン導電率 |
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| Research Abstract |
This work aims to construct the hydrogen-air fuel cells, which operate at intermediate temperature. In order to reduce the operation temperature, the fuel cells are constructed from a thin proton conducting oxide electrolyte and a hydrogen-permeable membrane anode. In this work, we examine at first the applicability of the hydrogen-permeable metal membrane for the anode in the fuel cell. Then, we evaluated the performance of the fuel cells consisting of the thin electrolyte supported by the metal membrane anode.
It is recognized that the hydrogen-permeable metal membrane anode works well similar to the porous Ni anode except the voltage loss. The voltage loss for the fuel cell with the Pd anode is lower than that for the fuel cell with the porous Ni anode.
BaCe_<0.9>Y_<0.1>O_<2.95> films, which are used for the electrolyte in the fuel cells, are prepared by the pulsed laser ablation method on the hydrogen-permeable metal substrates used as the anode. The fuel cells with the BaCe_<0.9>Y_<0.1>O_<2.95> electrolyte of 1.5〜2.0μm thickness and the hydrogen-permeable Pd anode of 25 μm thickness operate stably giving an open circuit voltage of 0.86 V at 400℃ and the power density of 0.52 mW/cm^2 is derived.
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