Performance of the gold-plated titanium bipolar plates for the light weight PEM fuel cells

Wang, Szu-Hua; Peng, Jinchyau; Lui, Wai‐Bun; Zhang, Jinsheng

doi:10.1016/j.jpowsour.2006.06.084

Cited by 154 publications

(45 citation statements)

References 10 publications

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“…For example, Wind et al [30] had shown that the performance of 316L bipolar plate with gold coating was similar to that of graphite. Wang et al also confirmed that fuel cell performance of gold-plated titanium bipolar plate was better than that of graphite and pure titanium bipolar plates [9]. The characteristics of titanium bipolar plates with iridium oxide and platinum coatings were close to that of graphite bipolar plate [31].…”

Section: Introductionmentioning

confidence: 87%

“…High cost and brittleness of graphite bipolar plate limit them to large-scale applications. Therefore, many researchers aim to investigate substitute materials including carbon composite materials, light metal materials [7][8][9][10], Fe-based alloys, stainless steels [11,12], and Ni-based materials [13][14][15]. Among these alternative materials, stainless steel is a promising candidate due to its high mechanical strength, low cost, and easiness in mass production.…”

Section: Introductionmentioning

confidence: 99%

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Corrosion Behavior of Passivated 316LSS with Ag Coating as PEMFC Bipolar Plate

Huang

Liang

Wang

et al. 2011

International Journal of Corrosion

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A new chemical passivation technique, which contained 20 g/L hydrogen peroxide, 3.75 g/L sodium silicate, 1.25 g/L sodium carbonate, 3.75 g/L lactic acid and 0.75 g/L 8-hydroxyquinoline, was used to modify 316 stainless steel with Ag coating (Ag-coated 316SS) as PEMFC bipolar plates. The results indicated that the compact passive film had been obtained on the surface of Agcoated 316SS. The passivation process could not only increase contact angle (from 58• to 104 • ) but also decreased pinhole defects of Ag-coated 316SS. Electrochemical test manifested that the passivation process could reduce Ag-coated 316SS's double layer capacitance (C d ), and increase its charge transfer resistance. So, it provided significant protection against corrosion for Ag-coated 316SS in PEMFC environment.

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Section: Introductionmentioning

confidence: 87%

Section: Introductionmentioning

confidence: 99%

Corrosion Behavior of Passivated 316LSS with Ag Coating as PEMFC Bipolar Plate

Huang

Liang

Wang

et al. 2011

International Journal of Corrosion

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“…Moreover, the formation of passive films formed on the metallic bipolar plates lead to an increase in the interfacial contact resistance between their surface and gas diffusion layers, and this adversely impacts cell performance due to an increase in the potential loss. To address this drawback, various types of coatings, such as gold [11], amorphous carbon (a-C) films [12], nitrogen plasma-implanted surface layers [13], iridium oxide (IrO 2 ) and platinum layers [14] fabricated onto titanium substrates by different surface modification techniques, have been investigated to protect uncoated titanium from the harsh operating environment. Refractory metal nitrides and carbonitrides coatings have extensive applications as coating materials, ranging from hard and protective coatings on mechanical tools, wear resistant and decorative layers on optical components, to diffusion barriers in microelectronic industry, because of their unusual combination of physical and chemical properties [15].…”

Section: Introductionmentioning

confidence: 99%

Corrosion behavior of a ZrCN coated Ti alloy with potential application as a bipolar plate for proton exchange membrane fuel cell

Huang

et al. 2016

Journal of Alloys and Compounds

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a b s t r a c tTo improve the corrosion resistance, surface electrical conductivity and wettability of Tie6Ale4V used in polymer electrolyte membrane fuel cell (PEMFC), a ZrCN nanocrystalline coating was deposited on Ti e6Ale4V substrate using double cathode glow discharge technique. The new coating exhibited a nanocomposite structure, consisting of amorphous C, CN x and nanocrystalline ZrCN. The effect of the HF concentrations on the corrosion behavior of the coating was investigated by potentiodynamic, potentiostatic polarizations and electrochemical impedance spectroscopy (EIS) in a simulated the operating conditions of a PEMFC. With increasing HF concentrations, the corrosion potential (E corr ) decreased and the corrosion current density (i corr ) of the ZrCN coating increased, indicating that corrosion resistance decreased with the increase of HF concentrations. However, at any given concentration of HF, the corrosion resistance of the ZrCN coating was significantly higher than that of uncoated Tie6Ale4V. The results of EIS measurements showed that with increasing the concentration of HF, the resistance of the passive film (R b ) formed on the ZrCN coating decreased slightly, being of the order of magnitude of 10 7 U cm 2 , which was an improvement by four orders of magnitude compared to uncoated Ti-6A1-4V. At a compaction force of 140 N cm À2 , no perceptible difference in the interfacial contact resistance (ICR)of ZrCN-coated Ti-6A1-4V was observed before and after potentiostatic polarization for 120 min, and its ICR values were reduced by one order of magnitude in comparison to that of uncoated Ti-6A1-4V. Moreover, ZrCN-coated Ti-6A1-4V exhibited a much low surface wettability than uncoated Tie6Ale4V alloy, which was beneficial for both water management and improving corrosion resistance.

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“…Thin metal sheet is a suitable material for a bipolar plate. The metals used for the construction of a lowtemperature fuel cell cover include nickel, titanium and coatings made based on these metals [4][5][6][7]. In [8], the possibility of using aluminum as a cheaper coating was studied.…”

Section: Introductionmentioning

confidence: 99%

Properties of graphite-stainless steel composite in bipolar plates in simulated anode and cathode environments of PEM fuel cells

Włodarczyk

2014

Materials Science-Poland

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The use of a graphite-stainless steel composite as bipolar plates (BP) in polymer electrolyte membrane fuel cells (PEMFCs) has been evaluated. The study covers measurements of mechanical properties, microstructural examination, analysis of surface profile, wettability, porosity and corrosion resistance of the composite. The corrosion properties of the composite were examined in 0.1 mol·dm −3 H 2 SO 4 + 2 ppm F − saturated with H 2 or with O 2 and in solutions with different pH: in Na 2 SO 4 + 2 ppm F − (pH = 1.00, 3.00, 5.00) at 80°C. The performed tests indicate that the graphite modified with stainless steel can be a good choice to be used as a bipolar plate in PEM fuel cells.

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Performance of the gold-plated titanium bipolar plates for the light weight PEM fuel cells

Cited by 154 publications

References 10 publications

Corrosion Behavior of Passivated 316LSS with Ag Coating as PEMFC Bipolar Plate

Corrosion Behavior of Passivated 316LSS with Ag Coating as PEMFC Bipolar Plate

Corrosion behavior of a ZrCN coated Ti alloy with potential application as a bipolar plate for proton exchange membrane fuel cell

Properties of graphite-stainless steel composite in bipolar plates in simulated anode and cathode environments of PEM fuel cells

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