Analysis of Oxygen Mass Transport across Ionomer of Polymer Electrolyte Fuel Cell Catalyst Layer
| Project/Area Number |
25410253
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Device related chemistry
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| Research Institution | Doshisha University |
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Principal Investigator |
INABA Minoru 同志社大学, 理工学部, 教授 (80243046)
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2015: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2013: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
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| Keywords | 燃料電池 / 酸素還元反応 / イオン交換膜 / 酸素透過 / 微少電極 / 酸素透過速度 / 酸素溶解速度 / イオノマー / 微小電極 |
|---|
| Outline of Final Research Achievements |
It is important to clarify the rate-determining step of oxygen mass transport in the porous electrode of polymer electrolyte fuel cells (PEFCs). In this study, elementary steps of oxygen transport were analyzed using a model Pt microelectrode and the limiting current method. In the temperature (30-80 degrees C) and relative humidity (30-80%) ranges tested in this study, the oxygen dissolution rate across the gas/ionomer interface was the rate-determining step. It was shown that an improvement of the oxygen dissolution rate is needed to enable PEFCs to be operated at current densities higher than 2 A/cm2.
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Report
(4 results)
Research Products
(3 results)
