Synergy effects of hybrid carbon system on properties of composite bipolar plates for fuel cells

Kim, Jong Wan; Kim, Nam Hoon; Kuilla, Tapas; Kim, Tae Jin; Rhee, Kyong Yop; Lee, Joong Hee

doi:10.1016/j.jpowsour.2010.03.083

Cited by 42 publications

(20 citation statements)

References 27 publications

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“…thus higher filler loadings in the samples were inevitable. The maximum graphite loading in PBA sample in this research was similar to that of graphite‐filled bisphenol F‐based epoxy having 75 vol % of graphite content . An incorporation of superior properties of graphene in highly filled graphite in PBA composite with an expense of graphite was further developed.…”

Section: Resultsmentioning

confidence: 63%

“…Such a combination effect of graphite/graphene in PBA composite, the electrical conductivity was higher than those of other composite system. For example, graphite/carbon fabric highly filled bisphenol F‐based epoxy samples had a maximum value of 210 S cm −1 . On the other hand, natural flake graphite highly filled PBA sample had the value of 240 S cm −1 .…”

Section: Resultsmentioning

confidence: 99%

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Development of highly conductive graphite‐/graphene‐filled polybenzoxazine composites for bipolar plates in fuel cells

Phuangngamphan

Okhawilai

Hızıroǧlu

et al. 2018

J of Applied Polymer Sci

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Superior conductive fillers reinforced polymer composites are ideal alternatives to graphitic and metallic materials in proton exchange membrane fuel cells (PEMFCs) for high thermal and electrical conductive bipolar plates. Polymer composites are known to be adversely influenced from high contact resistance thus to minimize such resistance, highly graphite‐/graphene‐filled polybenzoxazine (PBA) composites are developed in this work. A very low melt viscosity of benzoxazine resin with graphite loading as high as 83 wt % is used for the samples. With an addition of graphene platelet, thermal and electrical conductivities of the specimens having 75.5 wt % of graphite in a combination of 7.5 wt % of graphene are significantly enhanced to 14.5 W mK−1 and 323 S cm−1, respectively. Properties of highly graphite‐/graphene‐filled PBA composites exhibit most values exceed those requirements by the U.S. Department of Energy for PEMFCs applications. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47183.

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Section: Resultsmentioning

confidence: 63%

Section: Resultsmentioning

confidence: 99%

Development of highly conductive graphite‐/graphene‐filled polybenzoxazine composites for bipolar plates in fuel cells

Phuangngamphan

Okhawilai

Hızıroǧlu

et al. 2018

J of Applied Polymer Sci

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“…They suggested that carbon nanotubes destabilize the ABS polymer by participating in the radical degradation initiation process of the resin. Despite the obvious decrease of thermal stability imparted by the addition of MWNTs, the weight loss remained very small up to 300 C. This temperature can be considered safe for practical purposes if one considers the application of these composites in PEMFCs [60].…”

Section: Thermal Stabilitymentioning

confidence: 97%

Corrosion and thermal stability of multi-walled carbon nanotube–graphite–acrylonitrile–butadiene–styrene composite bipolar plates for polymer electrolyte membrane fuel cells

Oliveira

Ett

Antunes

2013

Journal of Power Sources

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h i g h l i g h t s < Development of ABSegraphiteeMWNT composite bipolar plates. < EIS successfully applies for understanding the corrosion mechanism of the composites. < MWNT concentration strongly affects the corrosion behavior of the ABSegraphite composites. < The best balance of properties was for the ABS-graphite composite with addition of 2 wt.% MWNT. a b s t r a c tComposite bipolar plates based on the proper mixing of multi-walled carbon nanotubes (MWNTs), synthetic graphite particles and acrylonitrileebutadieneestyrene (ABS) powder have been produced by hot compression molding. The corrosion properties of the molded plates were assessed through electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization curves. Through-plane and in-plane electrical conductivities were determined. The relevance of electrochemical oxidation to the electrical conductivity of the composites was assessed by cyclic voltammetry. Thermal stability of the composites was examined by thermogravimetric analysis (TGA). The morphology of fractured surfaces of the plates was observed by scanning electron microscopy. The incorporation of MWNTs increased the inplane and through-plane electrical conductivity of the ABSegraphite composites. There was, though, a corresponding reduction of the corrosion resistance. The thermal behavior was little affected by the addition of MWNTs.

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“…However, polymer-matrix composites bipolar plate face the serious problem of low electrical conductivity due to the insulating behavior of the polymer matrix; that issue remains to be solved [21]. Therefore, in order to secure high electrical conductivity, an excessive amount of graphite fillers have to be incorporated into the polymer matrix to meet the minimum requirement of electrical conductivity for a bipolar plate [22,23]. Excessive graphite loading in polymer matrix substantially deteriorates the mechanical strength and ductility of composite bipolar plates [24].…”

Section: Introductionmentioning

confidence: 99%

Synergistic Effects of Carbon Fillers of Phenolic Resin Based Composite Bipolar Plates on the Performance of PEM Fuel Cell

Gautam

Kar

2016

Fuel Cells

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The most essential and costly component of polymer electrolyte membrane fuel cells is the bipolar plate. The production of suitable composite bipolar plates for polymer electrolyte membrane fuel cell with good mechanical properties and high electrical conductivity is scientifically and technically very challenging. This paper reports the development of composite bipolar plates using exfoliated graphite, carbon black, and graphite powder in resole-typed phenol formaldehyde. The exfoliated graphite with maximum exfoliated volume of 570 + 10 mL g -1 used in this study was prepared by microwave irradiation of chemically intercalated natural flake graphite in a few minutes. The composite plates were prepared by varying exfoliated graphite content from 10 to 35 wt.% in phenolic resin along with fixed weight percentage of carbon black (5 wt.%) and graphite powder (3 wt.%) by compression molding. The composite plates own desired mechanical properties with low bulk density, high electrical conductivity, and good thermal stability as per the U.S. department of energy targets at low filler concentration and can be used as bipolar plates for proton exchange membrane fuel cells.

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Synergy effects of hybrid carbon system on properties of composite bipolar plates for fuel cells

Cited by 42 publications

References 27 publications

Development of highly conductive graphite‐/graphene‐filled polybenzoxazine composites for bipolar plates in fuel cells

Development of highly conductive graphite‐/graphene‐filled polybenzoxazine composites for bipolar plates in fuel cells

Corrosion and thermal stability of multi-walled carbon nanotube–graphite–acrylonitrile–butadiene–styrene composite bipolar plates for polymer electrolyte membrane fuel cells

Synergistic Effects of Carbon Fillers of Phenolic Resin Based Composite Bipolar Plates on the Performance of PEM Fuel Cell

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