2007 Fiscal Year Final Research Report Summary
DEVELOPMENT OF ONE CHAMBER TYPE METHANE-AIR FUEL CELL BASED ON PROTON CONDUCTING OXIDE ELECTROLYTE
| Project/Area Number |
17560622
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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 |
Structural/Functional materials
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| Research Institution | Tohoku University (2007)
Chiba Institute of Technology (2005-2006) |
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Principal Investigator |
YAMAGUCHI Sadae Tohoku University, Tohoku university, Institute for materials research, Professor Emeritus (80005892)
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| Co-Investigator(Kenkyū-buntansha) |
SHISHIDO Toetsu Tohoku University, Institute for Materials Research, Associate Professor (50125580)
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| Project Period (FY) |
2005 – 2007
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| Keywords | One chamber type fuel cell / Methane-air fuel / Solid oxide electrolyte / Ceramet electrode |
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| Research Abstract |
Based on a solid oxide electrolyte, Ce_<0.8>Sm_<0.2>O_<1.9>, one chamber type methane-air fuel cells have been constructed. Fuel cells based on a Ce_<0.8>Sm_<0.2>O_<1.9> electrolyte gave current-voltage performances significant better than those of a comparable cell based on a perovskite solid electrolyte such as BaZr_<0.8>Y_<0.2>O_<2.9>. The performance of fuel cells were governed by the catalytic activity of the both electrode and the conductivity of the electrolyte.
The fuel cells based on Ce_<0.8>Sm_<0.2>O_<1.9> electrolyte of 0.3 mm thickness generated 100 and 175 mA at a terminal voltage of 500 mV at temperatures of 700 and 750 ℃, respectively. In the methane-air fuel cell, the carbon deposition on the anode surface coming from the thermal decomposition of methane was serious problem. The coating of 1%Ru/Al_2O_3 catalysts coating on the anode component prevented the carbon deposition and maintained the stability of the methane-air fuel cell.
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