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The electrical conductivity, corrosion resistance and hydrophobic property of bipolar plate are important factors to affect the overall performance of proton exchange membrane fuel cell (PEMFC). In order to improve the performance of bipolar plate, ZrC coating has been prepared on bare Ti plate by plasma surface modification technology. From the microscopic morphology characterization, it can be found...
The drawback of corrosion resistance and surface conductivity are two obvious defects to limit the large‐scale application of 316L stainless steel (316L SS) as bipolar plate (BP) in proton exchange membrane fuel cell (PEMFC). A tantalum (Ta) modified coating was prepared by plasma surface modification technology on the surface of 316L SS bipolar plate to improve the functional performance. The electrochemical...
Plasma surface diffusion alloying method has been applied to prepare a tungsten diffusion modified layer on the surface of AISI 304 stainless steel (W‐304 SS). A series of material evaluation experiments were performed on the W‐304 SS specimens to determine whether it is suitable to be used as PEMFC bipolar plate. Results show that the tungsten modified layer (about 2.5 μm in thickness) is mainly...
To reduce the interfacial contact resistance (ICR) of the stainless steel, the surface modification technology of electroplating Cr and heating in vacuum for AISI 304SS is exploited. The electrochemical tests such as potentiodynamic and potentiostatic polarization in the simulation PEMFC environments are measured and the ICR between the carbon paper (diffusion layer) and the sample is evaluated. The...
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