| 학회 | 한국화학공학회 |
| 학술대회 | 2011년 봄 (04/27 ~ 04/29, 창원컨벤션센터) |
| 권호 | 17권 1호, p.443 |
| 발표분야 | 에너지 |
| 제목 | Intermediate Temperature Fuel Cell with Proton Conducting Thin Film Electrolyte |
| 초록 | Much attention has been devoted to the development of intermediate temperatures fuel cells (ITFCs), of which operating temperature range is 100~400°C. In3+ doped Tin pyrophosphate (Sn0.9In0.1P2O7), that has been reported as a promising candidate electrolyte for the ITFCs, exhibited high proton conductivities above 10-2 Scm-1 around 200°C under unhumidified conditions. However, for a fuel cell using this material as an electrolyte, Sn0.9In0.1P2O7 powders were merely pressed into pellets, due to the poor sinterability of this material. Area specific resistance (ASR) of 0.34 Ωcm2 was achieved with 0.31 mm-thick electrolyte, but open circuit voltages (OCVs) were decreased with reducing the electrolyte thickness (0.83 V), due to gas crossover through the electrolyte. Therefore, the synthesis of a dense and thin electrolyte membrane is a crucial requirement for the practical applications of this material. Here, we present the first successful fabrication of fully dense amorphous Sn0.9In0.1P2O7 thin film proton conductor membrane which exhibits extremely low ASR of 0.04 Ωcm2 without any additional humidification at 200°C and OCVs higher than 0.9 V in the fuel cells based on the thin film electrolyte. |
| 저자 | 허필원, 김태영, 하진수, 강상균, 최경환 |
| 소속 | 삼성종합기술원 |
| 키워드 | Inorganic proton conductor; Thin film; Intermediate temperature fuel cells (ITFCs) |
| VOD | VOD 보기 |
| 원문파일 | 초록 보기 |
