| 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 (Sn 0.9
In 0.1
P 2
O 7
), 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, Sn 0.9
In 0.1
P 2
O 7
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 Sn 0.9 In 0.1 P 2 O 7 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 |
