Synthesis and characterization of conductive ceramic MAX-phase coatings for metal bipolar plates in simulated PEMFC environments

• DOI: 10.1016/j.corsci.2019.108106
• Publication Date: 2019-07-19T19:51:28Z
• Authors: J.L. Lu; Nadeem Abbas; J.N. Tang; Jie Tang; G.M. Zhu
• Keywords: 02 engineering and technology; 0210 nano-technology

Abstract Conductive ceramic MAX-phase (Ti3AlC2) coated stainless-steel 304 exhibits good corrosion resistance in pH 3 H2SO4 solution containing 2 ppm F− at 70 °C in simulated PEMFC environments. The corrosion current density of the Ti-Al-C films is 0.44 μA·cm-2 were calculated using the potentiodynamic polarization, and the current density during the 24 h potentiostatic polarization test is 0.8 μA·cm-2. The interfacial contact resistance value of the Ti3AlC2-coated samples is 3.725 mΩ·cm2 at 140 N·cm-2 pressure, which is very low as compared to the bare SS304.