TY - JOUR
T1 - The effect of temperature on corrosion behavior of SS316L in the cathode environment of proton exchange membrane fuel cells
AU - Yang, Ying
AU - Guo, Liejin
AU - Liu, Hongtan
N1 - Funding Information:
The financial supports from Chang Jiang Scholars Program of Ministry of Education of China, the National Science Foundation of China (No. 50821064 ) and National Basic Research Program of China (No. 2009CB220000 ) are gratefully acknowledged. The authors would also like to thank Ms. Penghui Guo for her assistance in the XPS measurements.
PY - 2011/7/1
Y1 - 2011/7/1
N2 - The effect of temperature on the corrosion behavior of SS316L in simulated proton exchange membrane fuel cell (PEMFC) environments has been systematically studied. Electrochemical methods, both potentiodynamic and potentiostatic, are employed to characterize the corrosion behavior. Atomic force microscope (AFM) is used to examine the surface morphology and X-ray photoelectron spectroscopy (XPS) analysis is used to identify the composition and the depth profile of the passive film. Photo-electrochemical (PEC) measurements are also performed to determinate the band gap energy of the passive film semiconductor. Interfacial contact resistances (ICR) between polarized SS316L and carbon paper are also measured. The experimental results show that corrosion resistance decreases with temperatures even though the thickness of passive film increases with temperature, at a given cell potential, the corrosion behavior of SS316L can be significantly different at different temperatures in PEMFC cathode environments, and the band gap of passive films decrease with temperature. The results also show that within the temperature range studied (25-90 °C), after different passivation time, the corrosion current densities of SS316L are all lower than the US DOE 2015 target value of 1 μA cm-2, but the ICR between the carbon paper and polarized SS316L does not satisfy the US DOE 2015 target.
AB - The effect of temperature on the corrosion behavior of SS316L in simulated proton exchange membrane fuel cell (PEMFC) environments has been systematically studied. Electrochemical methods, both potentiodynamic and potentiostatic, are employed to characterize the corrosion behavior. Atomic force microscope (AFM) is used to examine the surface morphology and X-ray photoelectron spectroscopy (XPS) analysis is used to identify the composition and the depth profile of the passive film. Photo-electrochemical (PEC) measurements are also performed to determinate the band gap energy of the passive film semiconductor. Interfacial contact resistances (ICR) between polarized SS316L and carbon paper are also measured. The experimental results show that corrosion resistance decreases with temperatures even though the thickness of passive film increases with temperature, at a given cell potential, the corrosion behavior of SS316L can be significantly different at different temperatures in PEMFC cathode environments, and the band gap of passive films decrease with temperature. The results also show that within the temperature range studied (25-90 °C), after different passivation time, the corrosion current densities of SS316L are all lower than the US DOE 2015 target value of 1 μA cm-2, but the ICR between the carbon paper and polarized SS316L does not satisfy the US DOE 2015 target.
KW - Bipolar plate
KW - Corrosion
KW - Passive film
KW - Photo-electrochemistry (PEC)
KW - Proton exchange membrane fuel cell (PEMFC)
KW - Stainless steel
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U2 - 10.1016/j.jpowsour.2011.02.070
DO - 10.1016/j.jpowsour.2011.02.070
M3 - Article
AN - SCOPUS:79955472441
VL - 196
SP - 5503
EP - 5510
JO - Journal of Power Sources
JF - Journal of Power Sources
SN - 0378-7753
IS - 13
ER -