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Hydrogen permeation in PEM electrolyzer cells operated at asymmetric pressure conditions

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Autorschaft

Externe Organisationen

  • Otto-von-Guericke-Universität Magdeburg
  • Max-Planck-Institut für Dynamik komplexer technischer Systeme

Details

OriginalspracheEnglisch
Seiten (von - bis)F3164-F3170
FachzeitschriftJournal of the Electrochemical Society
Jahrgang163
Ausgabenummer11
PublikationsstatusVeröffentlicht - 24 Aug. 2016

Abstract

The present contribution investigates the hydrogen permeation through a fumea EF-40 catalyst coated membrane during PEM water electrolysis. The permeation is characterized at different temperatures and different pressure gradients across the membrane. The measured permeation fluxes show a quadratic dependence on the pressure difference. A permeation model combining a diffusive and convective transport can describe the experimental data quantitatively. The determined diffusive permeability coefficient KP,diffeff = 2.95 × 10-14 mol/(m s Pa)at 60 °C and its temperature dependence agrees very well with literature values. A convective permeability coefficient of the membrane is proposed for the description of the quadratic dependence. The obtained convective permeability coefficient KP,conveff = 9.02 × 10-21 mol/(m s Pa2)at 60 °C indicates a high hydraulic permeability in comparison with recently reported values. This high hydraulic permeability can be attributed especially to the low equivalent weight of the investigated membrane. Additionally, the operating conditions are suspected to support permeation.

Schlagwörter

    hydrogen, Proton exchange membrane fuel cells (PEMFC), Temperature distribution, Permeation, electrolysis, coated membranes, Regenerative Fuel Cells, Alkaline Water

ASJC Scopus Sachgebiete

Ziele für nachhaltige Entwicklung

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Hydrogen permeation in PEM electrolyzer cells operated at asymmetric pressure conditions. / Trinke, P.; Bensmann, B.; Reichstein, S. et al.
in: Journal of the Electrochemical Society, Jahrgang 163, Nr. 11, 24.08.2016, S. F3164-F3170.

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Trinke P, Bensmann B, Reichstein S, Hanke-Rauschenbach R, Sundmacher K. Hydrogen permeation in PEM electrolyzer cells operated at asymmetric pressure conditions. Journal of the Electrochemical Society. 2016 Aug 24;163(11):F3164-F3170. doi: 10.1149/2.0221611jes
Trinke, P. ; Bensmann, B. ; Reichstein, S. et al. / Hydrogen permeation in PEM electrolyzer cells operated at asymmetric pressure conditions. in: Journal of the Electrochemical Society. 2016 ; Jahrgang 163, Nr. 11. S. F3164-F3170.
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abstract = "The present contribution investigates the hydrogen permeation through a fumea EF-40 catalyst coated membrane during PEM water electrolysis. The permeation is characterized at different temperatures and different pressure gradients across the membrane. The measured permeation fluxes show a quadratic dependence on the pressure difference. A permeation model combining a diffusive and convective transport can describe the experimental data quantitatively. The determined diffusive permeability coefficient KP,diffeff = 2.95 × 10-14 mol/(m s Pa)at 60 °C and its temperature dependence agrees very well with literature values. A convective permeability coefficient of the membrane is proposed for the description of the quadratic dependence. The obtained convective permeability coefficient KP,conveff = 9.02 × 10-21 mol/(m s Pa2)at 60 °C indicates a high hydraulic permeability in comparison with recently reported values. This high hydraulic permeability can be attributed especially to the low equivalent weight of the investigated membrane. Additionally, the operating conditions are suspected to support permeation.",
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AU - Trinke, P.

AU - Bensmann, B.

AU - Reichstein, S.

AU - Hanke-Rauschenbach, R.

AU - Sundmacher, K.

N1 - Funding information: The authors gratefully acknowledge financial support from Deutsche Forschungsgemeinschaft, Grant nr. HA 6841/2-1 and SU 189/7-1.

PY - 2016/8/24

Y1 - 2016/8/24

N2 - The present contribution investigates the hydrogen permeation through a fumea EF-40 catalyst coated membrane during PEM water electrolysis. The permeation is characterized at different temperatures and different pressure gradients across the membrane. The measured permeation fluxes show a quadratic dependence on the pressure difference. A permeation model combining a diffusive and convective transport can describe the experimental data quantitatively. The determined diffusive permeability coefficient KP,diffeff = 2.95 × 10-14 mol/(m s Pa)at 60 °C and its temperature dependence agrees very well with literature values. A convective permeability coefficient of the membrane is proposed for the description of the quadratic dependence. The obtained convective permeability coefficient KP,conveff = 9.02 × 10-21 mol/(m s Pa2)at 60 °C indicates a high hydraulic permeability in comparison with recently reported values. This high hydraulic permeability can be attributed especially to the low equivalent weight of the investigated membrane. Additionally, the operating conditions are suspected to support permeation.

AB - The present contribution investigates the hydrogen permeation through a fumea EF-40 catalyst coated membrane during PEM water electrolysis. The permeation is characterized at different temperatures and different pressure gradients across the membrane. The measured permeation fluxes show a quadratic dependence on the pressure difference. A permeation model combining a diffusive and convective transport can describe the experimental data quantitatively. The determined diffusive permeability coefficient KP,diffeff = 2.95 × 10-14 mol/(m s Pa)at 60 °C and its temperature dependence agrees very well with literature values. A convective permeability coefficient of the membrane is proposed for the description of the quadratic dependence. The obtained convective permeability coefficient KP,conveff = 9.02 × 10-21 mol/(m s Pa2)at 60 °C indicates a high hydraulic permeability in comparison with recently reported values. This high hydraulic permeability can be attributed especially to the low equivalent weight of the investigated membrane. Additionally, the operating conditions are suspected to support permeation.

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KW - Permeation

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KW - Alkaline Water

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