| 학회 | 한국화학공학회 |
| 학술대회 | 2012년 봄 (04/25 ~ 04/27, 제주 ICC) |
| 권호 | 18권 1호, p.650 |
| 발표분야 | 에너지 |
| 제목 | Characteristics of Li2CO3 - Ceria doped with Samaria composite electrolytes for Intermediate Temperature Solid Oxide Fuel Cells |
| 초록 | Solid oxide fuel cells (SOFCs) have received much attention because of their high energy conversion efficiency and fuel flexibility. Especially, ceria based materials has been studied extensively due to its high ionic conductivity at relatively low temperatures. However, since ceria based material has high densification temperature near 1500℃, it is difficult to densify below 1500℃ by the conventional ceramic techniques. This high sintering temperature of ceria based materials causes some problems such as the increase of fabrication cost and the difficulties of co-firing with electrode materials. In order to lower sintering temperature of SDC or GDC, sintering aids such as Mn2O3, CoO, etc. has been used. however, to lower sintering temperature below 1000 oC is still hard. In this study, New sintering aid, Li2CO3 is introduced for lowering densification temperature of SDC. Li2CO3 added SDC was sintered at 800~1000 oC and their porosities was measured using ASTM method. Li2CO3 added SDC sintered at 800 oC shows low porosity of 2.3%(?) which is sufficient value to use electrolyte for SOFCs. The conductivity of Li2CO3 added SDC pellet was also examined using 4-point probe method. |
| 저자 | 오창훈1, 윤성필1, 송신애1, 김희수1, 남석우1, 한종희1, 권용재2 |
| 소속 | 1한국과학기술(연), 2서울과학기술대 |
| 키워드 | Li2CO3; SDC |
| 원문파일 | 초록 보기 |
