Bipolar plate made of carbon fiber epoxy composite for polymer electrolyte membrane fuel cells

Hwang, In Uk; Yu, Hongkun; Kim, Seong Su; Lee, Dai Gil; Suh, Jeong Dae; Lee, Sung Ho; Ahn, Byung Ki; Kim, Sae Hoon; Lim, Tae Woo

doi:10.1016/j.jpowsour.2008.05.088

Cited by 105 publications

(56 citation statements)

References 12 publications

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“…The fabrication of this much thin plate out of carbon/silicon carbide composite system opens the new horizon to fabricate even thinner bipolar plates. The typical properties of the three compacts F 20 , F 30, and F 50 are summarized and compared with the carbon/polymer composite, Table 1 [22][23]. In comparison to the properties of the bipolar plate referred here, all the three compacts of present work have superior properties.…”

Section: Resultsmentioning

confidence: 89%

Ultra‐thin carbon/silicon carbide composite bipolar plate for advanced fuel cells

Raunija

Gautam

Verma

2018

Materialwissenschaft Werkst

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The first cut results on the development of ultra-thin, low gas permeable, easily machineable, high electrical conductivity and high mechanical strength bipolar plate made up of carbon reinforced ceramic matrix are reported for the strategic application. Short carbon fiber reinforced silicon carbide matrix composite is fabricated by chopping continuous carbon fibers into discrete length, exfoliating and dispersing the exfoliated carbon fibers in silicon carbide powder and finally hot-pressing to make the composite. Three compacts containing exfoliated carbon fiber contents of 20, 30, 50 vol. % in silicon carbide matrix are prepared and characterized for electrical, thermal, gas permeability, density, and mechanical properties. The composite plates with exfoliated carbon fiber vol. % of 50, offer excellent electrical conductivity, flexural and compressive strengths and gas permeability of 2.2 3 10 -7 cm -3 cm -2 s -1. Carbon/silicon carbide plate shows 37.5 % and 4.7 % lower volume and weight, respectively on comparing with the best reported data of carbon/polymer composite plate. Competency of the material for bipolar plate fabrication is tested and found that the ceramic carbon composite may open up the new horizon for the fabrication of ultra-thin bipolar plates for strategic applications.

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Section: Resultsmentioning

confidence: 89%

Ultra‐thin carbon/silicon carbide composite bipolar plate for advanced fuel cells

Raunija

Gautam

Verma

2018

Materialwissenschaft Werkst

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“…Bipolar plates are main parts of fuel cells including Proton Exchange Membrane (PEM) that plays several significant roles in fuel cells [1]. These cells are composed of a sequence of units which each unit is assembled from membrane and bipolar plates (Fig.…”

Section: Introductionmentioning

confidence: 99%

Construction of Composite Polymer Bipolar Plate for Pem Fuel Cell

Zarmehri¹,

Sadeghi²,

Mehrabani-Zeinabad³

2013

IJEE

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Bipolar plates play the most significant role in weight, volume and corresponding costs of fuel cells. Initially, metallic and graphite materials had been used for production of bipolar plates due to their electrical conductivity characteristics. Later, these plates due to their deficiency such as corrosion, weight and production expenses were appropriately substituted by composite plates. This article presents results of a study on construction of bipolar plates using conductive polymeric composites. In the constructed composites, polypropylene was implement as polymer matrix and conductive carbon black and graphite as filler in order to supply the required electrical conductivity. The added fillers have been distributed in polypropylene by using an internal mixer. Then, bipolar plate specimens were prepared by molding of composite in hot press. The prepared specimens have been characterized to evaluate their specifications such as mechanical properties and their performance properties like thermal and electrical conductivities. The results of performed tests have shown a good performance on thermal conductivity greater than 10W/m.K, electrical conductivity higher than 50S/cm and high mechanical strength, flexural strength greater than 25MPa. The constructed composite plates were optimized and their weight in compare to similar metallic plates 80% and in contrast to graphite plates 40% were reduced. This method for production of bipolar plates is more economical as it reduces the cost of used materials and expenses of manufacturing operations.

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“…In addition, their gas transmission properties are outstanding and they can be processed thinly, allowing the reduced weight and miniaturization of fuel cells. However, metal oxides that are generated on the metal surfaces act as electrical insulators and lower the electrical conductivity, and metal cations dissociated from the metal pollute the catalyst layer and polyelectrolytes, and reduce fuel cell performance [4,5].…”

Section: Introductionmentioning

confidence: 99%

Effects of binder type and heat treatment temperature on physical properties of a carbon composite bipolar plate for PEMFCs

Kang¹,

Roh

2013

Carbon letters

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This study investigated a developed process for producing a composite bipolar plate having excellent conductivity by using coal tar pitch and phenol resin as binders. We used a pressing method to prepare a compact of graphite powder mixed with binders. Resistivity of the impregnated compact was observed as heat treatment temperature was increased. It was observed that pore sizes of the GCTP samples increased as the heat treatment temperature increased. There was not a great difference between the flexural strengths of GCTP-IM and CPR-IM as the heat treatment temperature was increased. The resistivity of GPR700-IM, heat treated at 700°C using phenolic resin as a binder, was 4829 µΩ·cm which was best value in this study. In addition, it is expected that with the appropriate selection of carbon powder and further optimization of process we can produce a composite bipolar plate which has excellent properties.

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Bipolar plate made of carbon fiber epoxy composite for polymer electrolyte membrane fuel cells

Cited by 105 publications

References 12 publications

Ultra‐thin carbon/silicon carbide composite bipolar plate for advanced fuel cells

Ultra‐thin carbon/silicon carbide composite bipolar plate for advanced fuel cells

Construction of Composite Polymer Bipolar Plate for Pem Fuel Cell

Effects of binder type and heat treatment temperature on physical properties of a carbon composite bipolar plate for PEMFCs

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