Amorphous carbon coated stainless separator for PEFCs

Effect of Surface Composition on Contact Resistivity and Corrosion Resistance of 316L Stainless Steel

“…The details of this measurement were described elsewhere. 12) In order to investigate the change of contact resistivity with elapsed time after acid treatment, the contact resistivity of these specimens was measured before and after they were exposed to air for a certain period. The contact resistivity measurement was performed one day before XPS analysis.…”

“…The details about the carbon-coated separators were reported previously. 12) For each cell, the amount of catalyst was 0.4 mg cm -2 and the thickness of electrolyte membrane was 20 μm, while the electro-active area was 50 cm 2 . The two cells were connected in serial to form a PEFC short stack.…”

“…Once there is a pin-hole or small scratch reaching the substrate of stainless steels, galvanic corrosion may occur between gold coating and stainless steels. To avoid the galvanic corrosion, carbon coating is proposed instead of gold coating; [7][8][9][10][11][12] however, the cost of carbon-coated separators is still considerably high.…”

Atomic spectrometry update. Industrial analysis: metals, chemicals and advanced materials

“…Baranowska and Franklin 17 investigated the morphology of gas-nitrided austenitic steel by a variety of methods: grazing incidence XRD (GI-XRD), EPMA, WD-XRF, SIMS, X-ray photoelectron spectrometry (XPS), atomic and magnetic force microscopy (AFM/MFM), and transmission electron microscopy (TEM). Carbon coating on steel, used in polymer electrolyte fuel cells, was investigated in a paper by Mori et al 18 The depth-profile of the coating was determined by GD-OES and XPS. Other characteristics of the thin film were determined by Raman spectroscopy and XPS.…”

Investigation of C/Al–Cr–N multilayer coatings for stainless steel bipolar plate in polymer electrolyte membrane fuel cells

“…Among these surface modification methods, physical vapor deposition (PVD) could be a promising technique because it allows the deposition of coatings with designed chemical composition and properties on a wide range of substrates. Metal nitrides, such as TiN [1][2][3][4], CrN [5][6][7][8] and carbon-based coatings [9][10][11][12][13] have been deposited on metallic bipolar plates by PVD technique due to their excellent electrical conductivity and corrosion resistance.…”