| Budget Amount *help |
¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2013: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2012: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
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| Outline of Final Research Achievements |
We studied chromium poisoning of solid oxide fuel cell (SOFC) cathode and clarified the following phenomena, which are useful for improvement of long-term stability of SOFC. With increasing cathode polarization, the amount of chromium deposition on the electrolyte surface near the electrode reaction sites increases. The deposition on the electrolyte surface which only depends on cathode polarization (not depends on the cathode material) is essential for understanding the chromium poisoning of SOFC. In the case of cathode material with higher reactivity, chromium vapor may be trapped on the cathode surface before reaching the electrode reaction sites. The deposited chromium on the electrolyte disappeared or segregated depending on cathode polarization change, which should offer beneficial information related to the Cr deposition mechanism.
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