| Project/Area Number |
10558071
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 展開研究 |
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| Research Field |
エネルギー学一般
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| Research Institution | TOHOKU UNIVERSITY |
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Principal Investigator |
IHARA Manabu Tohoku University, Institute of Multidisciplinary Research for Advanced Materials, Research Associate, 多元物質科学研究所, 助手 (90270884)
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| Co-Investigator(Kenkyū-buntansha) |
KUMAGAI Akibumi Tohoku University, Institute of Multidisciplinary Research for Advanced Materials, Research Associate, 多元物質科学研究所, 助手 (60006319)
SHIMOGAKI Yukihiko Tokyo University, Graduate School of Engineering, Associate Professor, 大学院・工学系研究科, 助教授 (60192613)
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| Project Period (FY) |
1998 – 2001
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| Project Status |
Completed (Fiscal Year 2001)
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| Budget Amount *help |
¥10,800,000 (Direct Cost: ¥10,800,000)
Fiscal Year 2001: ¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 2000: ¥1,800,000 (Direct Cost: ¥1,800,000)
Fiscal Year 1999: ¥4,400,000 (Direct Cost: ¥4,400,000)
Fiscal Year 1998: ¥3,500,000 (Direct Cost: ¥3,500,000)
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| Keywords | fuel cell electric vehicle / hydrocarbon fuel / dry methane / solid oxide / fuel cell / GDC / anode reaction mechanism / 電気自動車 / ドライメタン燃料 |
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| Research Abstract |
Stable power generation from a solid oxide fuel cell (SOFC) with a Ni/Gd-doped CeO_2 Cermet (GDC) anode in 100% dry-methane (CH_4) fuel was achieved at a maximum power density of 17OmW/cm^2 at 900 °C. The SOFC did not degrade even after 120 h of operation. The DC polarization of the Ni/GDC anode in hydrogen (H_2) fuel and in 4.5% dry-methane fuel was measured (by using the current interruption method) and then compared with those of Ni/YSZ, Pt/YSZ and Pt anodes. The apparent reaction orders of the oxygen activity for Ni/GDC anodes in both hydrogen fuel and 4.5% dry-methane fuel were smaller than those for Ni/YSZ, Pt/YSZ, and Pt anodes. Based on the previously proposed anode reaction mechanism for Ni/YSZ and Pt/YSZ anodes in hydrogen fuel and 4.5% dry-methane fuel, the stable power generation of the SOFC with the Ni/GDC anode in 100% dry-methane fuel was probably due to the high equilibrium constant between the oxygen in YSZ and the oxygen on the three-phase boundary on the anodes.
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