Thermal Properties of Epoxy Based Expanded Graphite Composite for Bipolar Plate of Polymer Electrolyte Fuel Cells

Lee, Jae Young; Lee, Ji Jung; Rhim, Hyung Ryul; Shim, Joong Pyo; Lee, Hong-Ki

doi:10.4028/www.scientific.net/amr.123-125.1107

Cited by 3 publications

(2 citation statements)

References 8 publications

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“…The functional possibilities of using thermally expanded graphite in electrodes for chemical sources of electric current were shown in [140][141][142]. The efficiency of using thermally expanded graphite as a binder instead of polymer solutions and, at the same time, as a conductive component in the composition of electrodes for various chemical sources of electrical energy was demonstrated.…”

Section: Application Of Graphene In Electrocatalytic Layers Of Polymementioning

confidence: 99%

Graphene and Graphene-Like Materials for Hydrogen Energy

et al. 2020

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The review is devoted to current and promising areas of application of graphene and materials based on it for generating environmentally friendly hydrogen energy. Analysis of the results of theoretical and experimental studies of hydrogen accumulation in graphene materials confirms the possibility of creating on their basis systems for reversible hydrogen storage, which combine high capacity, stability, and the possibility of rapid hydrogen evolution under conditions acceptable for practical use. Recent advances in the development of chemically and heat-resistant graphene-based membrane materials make it possible to create new gas separation membranes that provide high permeability and selectivity and are promising for hydrogen purification in processes of its production from natural gas. The characteristics of polymer membranes that are currently used in industry for the most part can be significantly improved with small additions of graphene materials. The use of graphene-like materials as a support of nanoparticles or as functional additives in the composition of the electrocatalytic layer in polymer electrolyte membrane fuel cells makes it possible to improve their characteristics and to increase the activity and stability of the electrocatalyst in the reaction of oxygen evolution.

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Section: Application Of Graphene In Electrocatalytic Layers Of Polymementioning

confidence: 99%

Graphene and Graphene-Like Materials for Hydrogen Energy

et al. 2020

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“…Natural graphite was used as a common matrix material 9–13, whereas thermoplastic polymers, such as polyvinylidene fluoride (PVDF) 14, 15, polypropylene (PP) 16, poly(ethylene terephthalate) (PET) 15, poly(phenylene sulfide)(PPS), and thermoset polymers, such as resols 17 novalak epoxy resins 18–22, and vinyl esters were used as additives. The plates need to be lightweight, to keep the power density (W kg −1 ) of a fuel cell system high, which is crucial for commercialization.…”

Section: Introductionmentioning

confidence: 99%

Expanded Graphite–Epoxy–Flexible Silica Composite Bipolar Plates for PEM Fuel Cells

et al. 2014

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Silica impregnated expanded graphite–epoxy composites are developed as bipolar plates for proton exchange membrane (PEM) fuel cells. These composite plates were prepared by solution impregnation, followed by compression molding and curing. Mechanical properties, electrical conductivities, corrosion resistance, and contact angles were determined as a function of impregnated content. The plates show high flexural strength with 5% methyltrimethoxysilane (MTMS) addition (20 MPa) and in‐plane conductivity of 131 S cm−1 that meet the DOE target (>100 S cm−1). Corrosion current values as low as 1.09 μA cm−2 were obtained. The contact angle was found to be 80°. Power density of 1 W cm−2 was achieved with custom made expanded graphite–polymer composite plates. High efficiency values were obtained at low current regions.

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