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- W2969516144 abstract "Abstract Nickel has been considered advantageous as a bipolar plate for proton exchange membrane fuel cells (PEMFC). In fact, nickel presents high mechanical strength, good thermal and electrical conductivity in addition to its low cost. Nevertheless, the long-term exposure of nickel bipolar plate to the humid medium of PEMFC accelerates its corrosion kinetics which brings to PEMFC performance deterioration. The objective of this study is to improve the corrosion resistance of nickel bipolar plate by means of conductive polymer coating. Typically, polypyrrole film has been electrodeposited using chronopotentiometric technique at different current densities in aqueous sodium saccharin medium. The electrochemical behaviour of nickel in the presence of sodium saccharinate solution in the absence and the presence of the pyrrole monomer were investigated using cyclic voltammetry. Characterization of the polypyrrole coating was carried out using x-ray photoelectrons (XPS) and scanning electron microscopy (SEM). Corrosion behavior of the PPy coating has been studied in aggressive medium using 3.5% NaCl by OCP and EIS techniques." @default.
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- W2969516144 date "2020-01-01" @default.
- W2969516144 modified "2023-10-01" @default.
- W2969516144 title "Electropolymerization and corrosion resistance of polypyrrole on nickel bipolar plate for PEM fuel cell application" @default.
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- W2969516144 doi "https://doi.org/10.1016/j.matpr.2019.08.072" @default.
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