한국신재생에너지학회:학술대회논문집
- 2006.11a
- /
- Pages.348-351
- /
- 2006
Development of Surface Coating Technology fey Metallic Bipolar Plate in PEMFC : I. Study on Surface and Corrosion Properties
PEMFCB금속분리판 코팅 기술 개발 : I. 표면 및 부식 특성 평가
- Chung, Kyeong-Woo ;
- Kim, Se-Yung ;
-
Yang, Yoo-Chang
;
- Ahn, Seung-Gyun ;
-
Jeon, Yoo-Taek
;
-
Na, Sang-Mook
- Published : 2006.11.23
Abstract
Bipolar plate, which forms about 50% of the stack cost, is an important core part with polymer electrolyte membrane in PEMFC. Bipolar plates have been commonly fabricated from graphite meterial having high electrical conductivity and corrosion resistance. Lately, many researchers have concentrated their efforts on the development of metallic bipolar plate and stainless steel has been considered as a potential material for metallic bipolar plate because of its high strength, chemical stability, low gas permeability and applicability to mass production. However, it has been reported that its inadequate corrosion behavior under PEMFC environment lead to a deterioration of membrane by dissolved metal ions and an increase in contact resistance by the growth of passive film therefore, its corrosion resistance as well as contact resistance must be improved for bipolar plate application. In this work, several types of coating were applied to 316L and their electrical conductivity and corrosion resistance were evaluated In the simulated PEMFC environment. Application of coating gave rise to low interfacial contact resistances below
Keywords
- PEMFC;
- Metallic bipolar plate;
- Interfacial contact rest stance;
- Corrosion resistance;
- Long-term stability
- 고분자 전해질막 연료전지;
- 금속분리판;
- 접촉저항;
- 내식성;
- 장기안정성;