Graphite-polypyrrole coated 316L stainless steel as bipolar plates for proton exchange membrane fuel cells

作者：Yang Li jun; Yu Hai jun; Jiang Li jun; Zhu Lei^*; Jian Xu yu; Wang Zhong

来源：International Journal of Minerals Metallurgy and Materials, 2011, 18(1): 53-58.

DOI：10.1007/s12613-011-0399-8

• proton exchange membrane fuel cells
• polypyrrole
• graphite
• corrosion
• contact resistance
• stainless steel

316L stainless steel (SS 316L) is quite attractive as bipolar plates in proton exchange membrane fuel cells (PEMFC). In this study, graphite-polypyrrole was coated on SS 316L by the method of cyclic voltammetry. The surface morphology and chemical composition of the graphite-polypyrrole composite coating were investigated by scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). A simulated working environment of PEMFC was applied for testing the corrosion properties of graphite-polypyrrole coated SS 316L. The current densities in the simulated PEMFC anode and cathode conditions are around 3x10(-9) and 9x10(-5) A.cm(-2), respectively. In addition, the interfacial contact resistance (ICR) was also investigated. The ICR value of graphite-polypyrrole coated SS 316L is much lower than that of bare SS 316L. Therefore, graphite-polypyrrole coated SS 316L indicates a great potential for the application in PEMFC.

• 出版日期2011-2
• 单位北京有色金属研究总院