Preparation, electrical, mechanical and thermal properties of composite bipolar plate for a fuel cell

Kuan, Hsu‐Chiang; Chen‐Chi, M.; Chen, Ke‐Hong; Shih, Jin-Chung

doi:10.1016/j.jpowsour.2004.02.024

Cited by 168 publications

(73 citation statements)

References 5 publications

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“…A novel composite bipolar plates based graphite were examined by Kuan and al. [11]. The porosity of the composites increased as the graphite size is decreased from 1000-177 µm.…”

Section: Introductionmentioning

confidence: 92%

Porous Carbon Materials for Elements in Low-Temperature Fuel Cells

Włodarczyk¹

2015

Archives of Metallurgy and Materials

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The porosity, distribution of pores, shape of pores and specific surface area of carbon materials were investigated. The study of sintered graphite and commercial carbon materials used in low-temperature fuel cells (Graphite Grade FU, Toray Teflon Treated) was compared. The study covered measurements of density, microstructural examinations and wettability (contact angle) of carbon materials. The main criterion adopted for choosing a particular material for components of fuel cells is their corrosion resistance under operating conditions of hydrogen fuel cells. In order to determine resistance to corrosion in the environment of operation of fuel cells, potentiokinetic curves were registered for synthetic solution 0.1M H 2 SO 4 + 2 ppmF − at 80• C. Keywords: fuel cell, bipolar plates, corrosion resistance, porosity, carbon materials W ramach niniejszej pracy badano porowatość, rozkład porów, kształt porów i powierzchnia właściwa materiałów węglo-wych. Badania dotyczyły spiekanego grafitu i materiałów komercyjnych wykorzystywanych do budowy ogniw niskotemperaturowych (Graphite Grade FU, Toray Teflon Treated).W pracy zamieszczono wyniki badań dotyczące pomiarów gęstości, mikrostruktury i zwilżalności (kąt zwilżania) materiałów węglowych. Głównym kryterium wskazującym wybór konkretnego materiału do elementów ogniw paliwowych jest ich odporność na korozję w warunkach pracy wodorowego ogniwa paliwowego. W celu określenia odporności na korozję w środowisku pracy ogniw paliwowych, zarejestrowano krzywe potentiokinetic w roztworze 0,1 M H2SO4 + 2 ppmF-w 80• C.

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“…A novel composite bipolar plates based graphite were examined by Kuan and al. [11]. The porosity of the composites increased as the graphite size is decreased from 1000-177 µm.…”

Section: Introductionmentioning

confidence: 92%

Porous Carbon Materials for Elements in Low-Temperature Fuel Cells

Włodarczyk¹

2015

Archives of Metallurgy and Materials

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“…It was shown that the optimum modulus of elasticity was achieved with the 50:50 AN-co-BMA-HNC. This was due to the good intercalation between the AN-co-BMA-HNC and wood fiber, which led to sufficient load transfer and enhanced the modulus of elasticity of the WPNCs compared to the RW (Kuan et al 2004). Also, the small particle size of the AN-co-BMA-HNC had a higher surface area, uniform surface structure, and good dispersion, which provided better adhesion strength to transfer stresses and reduced the elastic deformation from the AN-co-BMA-HNC to wood fiber (Zhang et al 1993).…”

Section: Three-point Flexural Testmentioning

confidence: 99%

Evaluation of Acrylonitrile/Butyl Methacrylate/Halloysite Nanoclay Impregnated Wood Polymer Nanocomposites

2017

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Acrylonitrile/butyl methacrylate/halloysite nanoclay wood polymer nanocomposites (AN-co-BMA-HNC WPNCs) were prepared via the impregnation method, and the effect of different ratios of polymers was investigated. The WPNCs were characterized through weight percent gain, Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), the three-point flexural test, dynamic mechanical thermal analysis (DMTA), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC) analysis, and the moisture absorption test. The weight percent gain in the 50:50 AN-co-BMA-HNC WPNCs was the highest compared with the raw wood (RW) and other WPNCs. The FT-IR results confirmed that polymerization took place in the nanocomposites, especially in the 50:50 AN-co-BMA-HNC WPNCs, with a reduction of hydroxyl groups. The SEM results revealed that the 50:50 AN-co-BMA-HNC WPNCs showed the best surface morphology. The 50:50 AN-co-BMA-HNC WPNCs showed the highest flexural strength and modulus of elasticity. The results revealed that the storage modulus and loss modulus of the AN-co-BMA-HNC WPNCs were higher, while the tan δ of the ANco-BMA-HNC WPNCs was lower, compared with the RW. The AN-co-BMA-HNC WPNCs also exhibited higher thermal stability and exhibited remarkably lower moisture absorption compared with the RW. Overall, this study demonstrated that the 50:50 AN-co-BMA ratio was the most suitable to be introduced into RW.

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“…Because the polymer structure is not electrically conductive, the addition of conductive fillers is critical to achieve the required electrical conductivity. Graphite fiber [7], carbon fiber [8], carbon black [9], and carbon nanotubes [8] have been used as conductive fillers in BPs for fuel-cell applications. Investigations have focused on the dispersion and distribution of fillers, interaction between fillers and polymer matrix, and electrical and mechanical properties of fillers.…”

Section: Introductionmentioning

confidence: 99%

Development of Integrally Molded Bipolar Plates for All-Vanadium Redox Flow Batteries

et al. 2016

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All-vanadium redox flow batteries (VRBs) are potential energy storage systems for renewable power sources because of their flexible design, deep discharge capacity, quick response time, and long cycle life. To minimize the energy loss due to the shunt current, in a traditional design, a flow field is machined on two electrically insulated frames with a graphite plate in between. A traditional bipolar plate (BP) of a VRB consists of many components, and thus, the assembly process is time consuming. In this study, an integrally molded BP is designed and fabricated to minimize the manufacturing cost. First, the effects of the mold design and injection parameters on frame formability were analyzed by simulation. Second, a new graphite plate design for integral molding was proposed, and finally, two integrally molded BPs were fabricated and compared. Results show that gate position significantly affects air traps and the maximum volume shrinkage occurs at the corners of a BP. The volume shrinkage can be reduced using a large graphite plate embedded within the frame.

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Preparation, electrical, mechanical and thermal properties of composite bipolar plate for a fuel cell

Cited by 168 publications

References 5 publications

Porous Carbon Materials for Elements in Low-Temperature Fuel Cells

Porous Carbon Materials for Elements in Low-Temperature Fuel Cells

Evaluation of Acrylonitrile/Butyl Methacrylate/Halloysite Nanoclay Impregnated Wood Polymer Nanocomposites

Development of Integrally Molded Bipolar Plates for All-Vanadium Redox Flow Batteries

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