| 고분자전해질 연료전지용 바이폴라 플레이트의 다층 코팅의 증착 |
| 윤영훈, 정훈택, 차인수, 최정식, 김동묵, 정진호1 |
동신대학교 수소에너지학과
1전남대학교 물리학과 |
| Multi-layered Coating Deposited on PEMFC (Proton Exchange Membrane Fuel Cell) Bipolar Plates |
| Young-Hoon Yun, Hoon-Taek Chung, In-Su Cha, Jeong-Sik Choi, Dong-Mook Kim, Jin-Ho Jung1 |
Department of Hydrogen & Fuel Cell Technology, Dongshin University
1Department of Physics, Chonnam National University |
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| ABSTRACT |
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The surface region of commercial stainless steel 304 and 316 plates has been modified through deposition of the multi-layered coatings composed of titanium film ($0.1{mu}m$) and gold film ($1-2{mu}m$) by an electron beam evaporation method. XRD patterns of the stainless steel plates deposited with conductive metal films showed the peaks of the external gold film and the stainless steel substrate. Surface microstructural morphologies of the stainless steel bipolar plates modified with multi-layered coatings were observed by AFM and FE-SEM images. The stainless steel plates modified with $0.1{mu}m$ titanium film and $1{mu}m$ gold film showed microstructure of grains of under 100 nm diameter. The external surface of the stainless steel plates deposited with $0.1{mu}m$ titanium film and $2{mu}m$ gold film represented somewhat grain growth of Au grains in FE-SEM image. The electrical resistance and water contact angle of the stainless steel bipolar plates modified with multi-layered coatings were examined with the thickness of the gold film. |
| Key words:
Proton exchange membrane fuel cell (PEMFC), Bipolar plate, Gold film, Titanium film, Electrical resistance |
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