[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.14773/cst.2010.9.3.129

Corrosion Behaviors of 316L Stainless Steel Bipolar Plate of PEMFC and Measurements of Interfacial Contact Resistance(ICR) between Gas Diffusion Layer(GDL) and Bipolar Plate

Oh, In-Hwan (School of Advanced Materials Engineering, Kookmin University)
Lee, Jae-Bong (School of Advanced Materials Engineering, Kookmin University)

Publication Information

Corrosion Science and Technology / v.9, no.3, 2010 , pp. 129-136 More about this Journal

Abstract

The corrosion behaviors of 316L stainless steel were investigated in simulated anodic and cathodic environments for proton exchange membrane fuel cell (PEMFC) by using electrochemical measurement techniques. Interfacial contact resistance(ICR) between the stainless steel and gas diffusion layer(GDL) was also measured. The possibility of 316L was evaluated as a substitute material for the graphite bipolar plate of PEMFC. The value of ICR decreased with an increase in compaction stress(20 N/ $cm^2$ ~220 N/ $cm^2$ ) showing the higher values than the required value in PEMFC condition. Although 316L was spontaneously passivated in simulated cathodic environment, its passive state was unstable in simulated anodic environment. Potentiostatic and electrochemical impedance spectroscopy (EIS) measurement results showed that the corrosion resistance in cathodic condition was higher and more stable than that in anodic condition. Field emission scanning electron microscopy (FE-SEM), and inductively coupled plasma(ICP) were used to analyze the surface morphology and the metal ion concentration in electrolytes.

Keywords

PEMFC; bipolar plate; stainless steel; interfacial contact resistance;

Citations & Related Records

Times Cited By KSCI : 1 (Citation Analysis)

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