| Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2010: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2009: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2008: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Research Abstract |
We have investigated the cathodic performance of (Sr_<1-x>Ce_x)MnO_<3±>. (X=0.1～0.4, SCM), both with and without Ce_<0.8>Sm_<0.2>O_<1.9> (SDC) as an additive, for solid oxide fuel cells. The current density (IR-free) at overpotential of 0.2V in 800℃ showed maximum value of 200mA cm^<-2> (x=0.3), which was larger than that of La_<0.8>Sr_<0.2>Co_<0.3>Fe_<0.2>O_3 (LSCF) in the same measurement condition. The overpotential of SCM cathode in applying the 0.2A cm^<-2> at 800℃ kept constant value over 1000 hours. The current density of SCM (X=0.3) with SDC additive was higher than that of SCM (X=0.3), which is due to an improvement of the effective three-phase boundary area and oxide ion conductivity of the cathode. We concluded that the SCM is one of the candidate cathode materials for SOFC.
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