| Budget Amount *help |
¥17,940,000 (Direct Cost: ¥13,800,000、Indirect Cost: ¥4,140,000)
Fiscal Year 2013: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2012: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
Fiscal Year 2011: ¥7,280,000 (Direct Cost: ¥5,600,000、Indirect Cost: ¥1,680,000)
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| Research Abstract |
The objective of this study is to elucidate the freezing mechanism in the catalyst layer (CL) at cold start and water transport phenomena in the vicinity of the micro-porous layer (MPL) in PEFC. The freezing model was developed, and the detailed observation of the MPL cross-section was conducted. These showed that the ice distribution formed during the -20 degree C cold start strongly depends on the current density, but not on the oxygen supply condition. This study also identified the factor controlling the ice distribution, and the liquid water distribution under normal operations above freezing temperature.
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