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Characteristics of Fluorine-Doped Tin Oxide Film Coated on SUS 316 Bipolar Plates for PEMFCs
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 Title & Authors
Characteristics of Fluorine-Doped Tin Oxide Film Coated on SUS 316 Bipolar Plates for PEMFCs
Park, Ji-Hun; Hudaya, C.; Jeon, Bup-Ju; Byun, Dong-Jin; Lee, Joong-Kee;
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 Abstract
Polymer electrolyte membrane fuel cells (PEMFCs) use the bipolar plate of various materials between electrolyte and contact electrode for the stable hydrogen ion exchange activation. The bipolar plate of various materials has representatively graphite and stainless steel. Specially, stainless steels have advantage for low cost and high product rate. In this study, SUS 316 was effectively coated with 600 nm thick F-doped tin oxide (SnOx:F) by electron cyclotron resonance-metal organic chemical vapor deposition and investigated in simulated fuel cell bipolar plates. The results showed that an F-doped tin oxide (SnOx:F) coating enhanced the corrosion resistance of the alloys in fuel cell bipolar plates, though the substrate steel has a significant influence on the behavior of the coating. Coating SUS 316 for fuel cell bipolar plates steel further improved the already excellent corrosion resistance of this material. After coating, the increased ICR values of the coated steels compared to those of the fresh steels. The SnOx:F coating seems to add an additional resistance to the native air-formed film on these stainless steels.
 Keywords
PEMFC;Bipolar plate;Corrosion resistance;Contact resistance;ECR-MOCVD;
 Language
Korean
 Cited by
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