| 학회 |
한국재료학회 |
| 학술대회 |
2010년 가을 (11/11 ~ 11/12, 무주리조트) |
| 권호 |
16권 2호 |
| 발표분야 |
C. Energy and the Environment Technology(에너지 및 환경재료) |
| 제목 |
Composite cathode for IT-SOFC: Transition metal doped GdBaCo2O5+δ and Gd-doped ceria |
| 초록 |
The performance of GdBaCo2/3Fe2/3Cu2/3O5+δ(FC-GBCO)– x wt.% Gd0.1Ce0.9O1.95 (GDC) (x=0 to 50) composite cathode has been investigated for their potential application in intermediate-temperature solid oxide fuel cells (IT-SOFCs). The thermal expansion behavior shows that the TEC value of FC-GBCO cathode decreases greatly with GDC addition. The composite cathode of FC-GBCO - 40wt.% GDC (CG40) coated on Gd0.1Ce0.9O1.95 electrolyte showed the lowest area specific resistance (ASR) i.e., 0.041 Ωcm2 at 750 ºC. An electrolyte supported (300 μm thick) single-cell configuration of CG40/GDC/Ni-GDC attained a maximum power density of 800 mWcm-2 at 800 oC. The unique composite composition of CG40 exhibited enhanced electrochemical performance, reduced TEC and good chemical compatibility with CGO electrolyte compared with their FC-GBCO cathode for IT-SOFCs. |
| 저자 |
이승준, 김동석, 조승환, P. Muralidharan, 김도경
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| 소속 |
카이스트 신소재공학과 |
| 키워드 |
SOFCs; Composite cathode; Electrochemical performance; GdBaCo2O5+δ
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| E-Mail |
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