2011 Fiscal Year Final Research Report
Study on Effect of Concentration Boundary Layer on Performance of Solid Oxide Fuel Cell
| Project/Area Number |
21560222
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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 |
Thermal engineering
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| Research Institution | The University of Kitakyushu |
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Principal Investigator |
IZUMI Masaaki 北九州市立大学, 国際環境工学部, 教授 (50336939)
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| Project Period (FY) |
2009 – 2011
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| Keywords | 固体酸化物形燃料電池 / 濃度境界層 / 燃料ガス流 / 噴流 / 過電圧 |
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| Research Abstract |
Effect of concentration boundary in a fuel gas channel on performance of a solid oxide fuel cell was investigated by experiments and numerical analyses. The fuel gas was supplied to anode-supported cells by two different methods : jet flow and parallel flow, and cell performance was measured as changing H_2 flow rate in each method. As a result, it was found that the cell-voltage in the case of the parallel flow was greater than that of the jet flow in the higher current density region. And the cell-voltage increased with H_2 flow rate in each case. These differences between the cell-performances were caused by overpotentials related to phenomena in the lower frequency region. Furthermore, the results of the numerical analyses indicated that these differences between the cell-performances had a significant correlation with the electromotive force that was determined by the H_2 concentration on the fuel electrode surface.
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