Enhanced Anticorrosion Properties of SnO2 Coatings in Simulated PEMFC Environments by Hydrothermal Treatment

Hong Yun; Zhi Guo Zhang; Qun Jie Xu; Chen Ying Tan

doi:10.4028/www.scientific.net/AMR.860-863.793

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 860-863Enhanced Anticorrosion Properties of SnO2 Coatings...

Enhanced Anticorrosion Properties of SnO₂ Coatings in Simulated PEMFC Environments by Hydrothermal Treatment

Abstract:

SnO₂ coatings were supplied on the surface of 304 stainless steel (304SS) by a sol-gel process followed by hydrothermal treatments at different reaction temperature and time, respectively. The effects of hydrothermal temperature and time in pure water on the anticorrosion performances of the SnO₂ films in simulated proton exchange membrane fuel cells (PEMFC) environments were investigated by potentiodynamic polarization curves, open circuit potential-time curves and electrochemical impedance spectroscopy (EIS). It was found that the SnO₂ coated 304SS via the hydrothermal treatment showed a better corrosion resistance than the sample without hydrothermal treatment and bare 304SS. The SnO₂ coated 304SS hydrothermally treated at 160°C for 3h showed the highest corrosion resistance among the samples. The results have been discussed in terms of surface structure of SnO₂ film and its anticorrosion performance in simulated PEMFC environments.

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Periodical:

Advanced Materials Research (Volumes 860-863)

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793-796

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.860-863.793

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Online since:

December 2013

Authors:

Hong Yun, Zhi Guo Zhang, Qun Jie Xu, Chen Ying Tan

Keywords:

304 Stainless Steel, Anticorrosion, Hydrothermal, SnO₂

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