Carbon/carbon composite bipolar plate for proton exchange membrane fuel cells

Theodore M. Besmann; James W. Klett; John J. Henry; Edgar Lara-Curzio

doi:10.1149/1.1394023

Carbon/carbon composite bipolar plate for proton exchange membrane fuel cells

Theodore M. Besmann, James W. Klett, John J. Henry, Edgar Lara-Curzio

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142 Scopus citations

Abstract

Carbon/carbon-composite bipolar plates for proton exchange membrane fuel cells (PEMFC) have been fabricated by slurry molding a chopped-fiber preform followed by sealing with chemically vapor-infiltrated carbon. The resulting component is hermetic with respect to through-thickness leakage and has a high electronic conductivity (200-300 S/cm) as a result of the deposited graphitic carbon. The material has a low density (0.96 g/cm³) due to retained porosity resulting in a low-weight component. Biaxial flexure strength was measured to be 175±26 MPa. Cell testing of a 100 cm² active area, single-sided plate indicated very low cell resistance and high efficiency, but with a somewhat steep drop-off in voltage with current at high values. Corrosion testing indicated minimal corrosion in fuel cell environments.

Original language	English
Pages (from-to)	4083-4086
Number of pages	4
Journal	Journal of the Electrochemical Society
Volume	147
Issue number	11
DOIs	https://doi.org/10.1149/1.1394023
State	Published - Nov 2000

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title = "Carbon/carbon composite bipolar plate for proton exchange membrane fuel cells",

abstract = "Carbon/carbon-composite bipolar plates for proton exchange membrane fuel cells (PEMFC) have been fabricated by slurry molding a chopped-fiber preform followed by sealing with chemically vapor-infiltrated carbon. The resulting component is hermetic with respect to through-thickness leakage and has a high electronic conductivity (200-300 S/cm) as a result of the deposited graphitic carbon. The material has a low density (0.96 g/cm3) due to retained porosity resulting in a low-weight component. Biaxial flexure strength was measured to be 175±26 MPa. Cell testing of a 100 cm2 active area, single-sided plate indicated very low cell resistance and high efficiency, but with a somewhat steep drop-off in voltage with current at high values. Corrosion testing indicated minimal corrosion in fuel cell environments.",

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T1 - Carbon/carbon composite bipolar plate for proton exchange membrane fuel cells

AU - Besmann, Theodore M.

AU - Klett, James W.

AU - Henry, John J.

AU - Lara-Curzio, Edgar

PY - 2000/11

Y1 - 2000/11

N2 - Carbon/carbon-composite bipolar plates for proton exchange membrane fuel cells (PEMFC) have been fabricated by slurry molding a chopped-fiber preform followed by sealing with chemically vapor-infiltrated carbon. The resulting component is hermetic with respect to through-thickness leakage and has a high electronic conductivity (200-300 S/cm) as a result of the deposited graphitic carbon. The material has a low density (0.96 g/cm3) due to retained porosity resulting in a low-weight component. Biaxial flexure strength was measured to be 175±26 MPa. Cell testing of a 100 cm2 active area, single-sided plate indicated very low cell resistance and high efficiency, but with a somewhat steep drop-off in voltage with current at high values. Corrosion testing indicated minimal corrosion in fuel cell environments.

AB - Carbon/carbon-composite bipolar plates for proton exchange membrane fuel cells (PEMFC) have been fabricated by slurry molding a chopped-fiber preform followed by sealing with chemically vapor-infiltrated carbon. The resulting component is hermetic with respect to through-thickness leakage and has a high electronic conductivity (200-300 S/cm) as a result of the deposited graphitic carbon. The material has a low density (0.96 g/cm3) due to retained porosity resulting in a low-weight component. Biaxial flexure strength was measured to be 175±26 MPa. Cell testing of a 100 cm2 active area, single-sided plate indicated very low cell resistance and high efficiency, but with a somewhat steep drop-off in voltage with current at high values. Corrosion testing indicated minimal corrosion in fuel cell environments.

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Carbon/carbon composite bipolar plate for proton exchange membrane fuel cells

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