Carbon-based films coated 316L stainless steel as bipolar plate for proton exchange membrane fuel cells |
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| Authors: | Yu Fu Guoqiang Lin Ming Hou Bo Wu Zhigang Shao Baolian Yi |
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| Affiliation: | 1. Dalian Sunrise Power Co., LTD, Dalian 116025, China;2. Dalian University of Technology, Dalian 116024, China;3. Fuel Cell Laboratory, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China;4. Graduate University of Chinese Academy of Sciences, Beijing 100049, China |
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| Abstract: | Carbon-based films on 316L stainless steel were prepared as bipolar plates for proton exchange membrane fuel cells (PEMFCs) by pulsed bias arc ion plating. Three kinds of films were formed including the pure C film, the C–Cr composite film and the C–Cr–N composite film. Interfacial conductivity of the bipolar plate with C–Cr film was the highest, which showed great potential of application. Corrosion tests in simulated PEMFC environments revealed that the C–Cr film coated sample always showed better anticorrosive performance than 316L stainless steel either in reducing or oxidizing environments. The C–Cr film coated bipolar plate sample also had high surface energy. The contact angle of the C–Cr film coated sample with water was 92°, which is beneficial for water management in a fuel cell. |
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| Keywords: | Metal bipolar plate Surface treatment Pulsed bias arc ion plating |
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