| 고분자전해질 연료전지용 바이폴라 플레이트의 표면형상과 전기적 특성 |
| 송연호, 윤영훈1 |
조선대학교 생명화학공학과
1동신대학교 수소에너지학과 |
| Surface Morphology and Electrical Property of PEMFC (Proton Exchange Membrane Fuel Cell) Bipolar Plates |
| Yon-Ho Song, Young-Hoon Yun1 |
Department of Chemical and Biochemical Engineering, Chosun University
1Department of Hydrogen & Fuel Cell Technology, Dongshin University |
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| ABSTRACT |
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The multi-films of a metallic film and a transparent conducting oxide (TCO, indium-tin oxide, ITO) film were formed on the stainless steel 316 and 304 plates by a sputtering method and an E-beam method and then the external metallic region of the stainless steel bipolar plates was converted into the metal nitride films through an annealing process. The multi-film formed on the stainless steel bipolar plates showed the XRD patterns of the typical indium-tin oxide, the metallic phase and the metal substrate and the external nitride film. The XRD pattern of the thin film on the bipolar plates modified showed two metal nitride phases of CrN and $Cr_2N$ compound. Surface microstructural morphology of the multi-film deposited bipolar plates was observed by AFM and FE-SEM. The metal nitride film formed on the stainless steel bipolar plates represented a microstructural morphology of fine columnar grains with 10 nm diameter and 60nm length in FE-SEM images. The electrical resistivity of the stainless steel bipolar plates modified was evaluated. |
| Key words:
Proton exchange membrane fuel cell (PEMFC), Bipolar plate, Indium-tin oxide (ITO) film, Metallic film, Metal nitride film |
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