Application of Ni-free high nitrogen stainless steel for bipolar plates of proton exchange membrane fuel cells

Kumagai, Masanobu; Kuwata, Shiho; Asaishi, Ryo; Katada, Yasuyuki; Yashiro, Hitoshi

doi:10.1016/j.electacta.2008.08.056

Cited by 35 publications

(15 citation statements)

References 31 publications

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“…Consequently, the corrosion induces higher contact resistance between gas diffusion layer (GDL) and bipolar plates. In addition, Fe 2+ , Ni 2+ and Cr 3+ released from the corroded stainless steel bipolar plates are also immobilized in the membrane, affecting detrimentally to cell performance [40,[45][46][47]. Thus, application of EIS to PEMFC with metallic bipolar plates is necessary to establish a procedure for diagnosis of cell performance, as reported by Ishibashi et al [48].…”

Section: Page 3 Of 34mentioning

confidence: 96%

Evaluation of polymer electrolyte membrane fuel cells by electrochemical impedance spectroscopy under different operation conditions and corrosion

Kumagai¹,

Ichikawa

Yashiro

2010

Journal of Power Sources

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Electrochemical impedance spectroscopy (EIS) was employed for in situ diagnosis for polymer electrolyte membrane fuel cells during operation. First, EIS was measured as a function of operation parameters such as applied current density, gas flow rates and gas humidification temperature. The resistance that correlated with conductivity of the membrane and the contact resistance between bipolar plate and gas A c c e p t e d M a n u s c r i p t 2 diffusion layer (GDL) was set as R m in the assumed equivalent circuit. The charge transfer resistances were considered for cathode (R ct (C)). The value of R ct (C) was sensitive to the parameters that affected cell voltage. Additionally, the diffusion resistance (R d ) was ascribed to the effect of oxygen supply and drainage of generated water. Second, the influence of corrosion of type 430 stainless steel bipolar plates was evaluated by EIS method during operation. Corrosion of the stainless steel bipolar plates resulted in an increase in the value of R d .

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Section: Page 3 Of 34mentioning

confidence: 96%

Evaluation of polymer electrolyte membrane fuel cells by electrochemical impedance spectroscopy under different operation conditions and corrosion

Kumagai¹,

Ichikawa

Yashiro

2010

Journal of Power Sources

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“…Moreover, 304/304L SS showed higher contact resistance than 316/316L SS [33,37,44,45,[56][57][58], which could be related to the lower alloying content [33]. For these reasons, except use in some small-scale demonstration fuel cells [61] or for cladding with another functional layer [62], 304/304L SS has normally acted as a substrate for coating deposition [44,45,[55][56][57][58][59][63][64][65] In addition, some high N-bearing SSs have been evaluated for bipolar plate application [66][67][68] and showed promising results both in simulated PEMFC environments and in stack testing. High N-bearing SS is more economical compared with the conventional SSs.…”

Section: Bare Metallic Bipolar Platesmentioning

confidence: 99%

Reviewing Metallic PEMFC Bipolar Plates

2010

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A bipolar plate is one of the most important components in a polymer exchange membrane fuel cell (PEMFC) stack and has multiple functions. Metallic bipolar plate candidates have advantages over composite rivals in excellent electrical and thermal conductivity, good mechanical strength, high chemical stability, very wide alloy choices, low cost and, most importantly, existing pathways for high‐volume, high‐speed mass production. The challenges with metallic bipolar plates are the higher contact resistance and possible corrosion products, which may contaminate the membrane electrode assembly. This review evaluates the candidate metallic and coating materials for bipolar plates and gives the perspective of the research trends.

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“…Hence, the reduction of the cost, mass, and volume of these bipolar plates is critical to the development of PEMFCs. For practical application, bipolar plate materials should possess high corrosion resistance, high electrical conductivity, and low permeability and be economic to manufacture [5]. Traditionally, bipolar plates are made from non-porous graphite, because of its good electronic conductivity and high chemical stability in PEM fuel cell environments.…”

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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Application of Ni-free high nitrogen stainless steel for bipolar plates of proton exchange membrane fuel cells

Cited by 35 publications

References 31 publications

Evaluation of polymer electrolyte membrane fuel cells by electrochemical impedance spectroscopy under different operation conditions and corrosion

Evaluation of polymer electrolyte membrane fuel cells by electrochemical impedance spectroscopy under different operation conditions and corrosion

Reviewing Metallic PEMFC Bipolar Plates

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

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