期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 40, 期 17, 页码 5947-5957出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2015.01.165
关键词
Proton exchange membrane fuel cell; Cathodic environment; Passive films; Electronic property
资金
- National Nature Science Foundation of China [51305228]
The influence of Mo on the corrosion behaviors of 316 L SS in the simulated cathodic environment of proton exchange membrane fuel cell (PEMFC), was investigated by potentiodynamic polarization curve, electrochemical impedance spectroscopy (EIS), Mott-Schottky plot and X-ray photoelectron spectroscopy (XPS). The results showed that 316 L SS was in the passive state in the simulated cathodic environment of PEMFC, the passive current density decreased and the passive potential region enlarged with increasing Mo. The compactness and resistance of the passive film on 316 L SS enhanced with increasing Mo, implying the improved film protection. Mott-Schottky plots revealed that Mo can decrease the donor and acceptor densities of the inner and outer films. XPS results showed that Mo can increase the thickness of the passive film, and can increase the Cr2O3 content in the passive film. Copyright (C) 2015, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
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