| 학회 |
한국화학공학회 |
| 학술대회 |
2006년 가을 (10/27 ~ 10/28, 고려대학교) |
| 권호 |
12권 2호, p.1931 |
| 발표분야 |
에너지/환경 |
| 제목 |
Effects of shut-down operation on the performance at the freeze/thaw cycles for the cold start-up of PEFC |
| 초록 |
Water management is one of vital points in PEFC (Polymer Electrolyte Fuel Cell) operation to achieve high performance as well as its durability. In this work, the various shut-down processes were systematically considered for the successful cold start-up. The influences of shut-down operation were investigated with single cells to understand the start-up ability as well as its durability. Performance and durability of the single cells which have various water removal conditions were evaluated with several times of freeze/thaw cycles. Thermal cycle effects on the characteristics of single cells were investigated with various start-up/shut-down conditions such as degree of freezing temperature, freezing rate and the maintaining time at the sub-freeze temperature. After finishing the freeze/thaw cycles, SEM, EPMA, N2 adsorption/desorption were checked for the alternation of physical properties. The result shows that the amount of remaining water after shut-down process affects on the performance as well as durability. |
| 저자 |
임남윤1, 박구곤1, 박진수1, 윤영기1, 이원용1, 임태원2, 김창수1
|
| 소속 |
1한국에너지기술(연), 2현대자동차 |
| 키워드 |
Fuel Cell; Cold start; Water management; Sub-Freezing Condition
|
| E-Mail |
|
| 원문파일 |
초록 보기 |
