고분자 전해질 연료전지 금속분리판 316L 스테인리스강의 부식거동 및 기체확산층(GDL)과의 계면접촉저항 측정
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
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초록
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/cm2~220 N/cm2) 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.
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/cm2~220 N/cm2) 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.
참고문헌 (14)
- E. A. Cho, , Polymer Sci. and Tech., 15, pp.5~ (2004)
- A. Hermann, , Int. J. Hydrogen Energy, 30, pp.359~ (2005)
- 최준환, "분말야금법에 의한 고분자전해질 연료전지 분리판용 저접촉저항 316L 스테인리스강 복합소재 제조", 대한금속·재료학회지, 46(12), pp.817~822 (2008), 대한금속·재료학회
- D. P. Davies, , J. Power Sources, 86, pp.237~ (2000)
- H. Wang, , J. Power Sources, 115, pp.243~ (2003)
- Y. Wang, , J. Power Sources, 191, pp.483~ (2009)
- S. J. Lee, , J. Mater. Tech., 140, pp.688~ (2003)
- Y. Wang, , J. Power Sources, 165, pp.293~ (2007)
- S. B. Lee, , J. Power Sources, 187, pp.318~ (2009)
- M. Li, , Corros. Sci., 46, pp.1369~ (2004)
- W. Y. Ho, , Surf. & Coat. Technol., 202, pp.1297~ (2007)
- J. H. Kim, , POSCO Research paper, 12, pp.36~ (2007)
- R. Tian, , Int. J. Hydrogen Energy, 33, pp.7507~ (2008)
- J. Andre, , Int. J. Hydrogen Energy., 34, pp.3125~ (2009)