Accelerated degradation of polymer electrolyte membrane fuel cell gas diffusion layers: Mass transport resistance and liquid water accumulation at limiting current density with in operando synchrotron X-ray radiography

George MG, Liu H, Banerjee R, Ge N, Shrestha P, Muirhead D, Lee J, Chevalier S, Hinebaugh J, Messerschmidt M, Zeis R, Scholta J, Bazylak A (2016)

Publication Type: Conference contribution

Publication year: 2016

Journal

ECS Transactions Electrochemical Society

Publisher: Electrochemical Society Inc.

Book Volume: 75

Pages Range: 89-100

Conference Proceedings Title: ECS Transactions

Event location: Honolulu, HI, USA

ISBN: 9781607687313

DOI: 10.1149/07514.0089ecst

Abstract

An SGL 29BC gas diffusion layer (GDL) was degraded (aged) in hydrogen peroxide. The impact of ageing was measured through deviations from pristine GDLs in terms of limiting current densities, oxygen mass transport resistances, and liquid water spatial distributions in the GDL. For dry and saturated cathode conditions (oxygen concentrations of 1% and 21%, respectively) the fuel cell containing the aged GDL reached limiting current densities that were up to 10.3% lower and experienced increases in oxygen mass transport resistance of up to 11.7% versus the pristine GDL. This performance reduction was attributed to a higher liquid water content (13% more at an oxygen concentration of 21%) in the aged GDL under the channel compared to the pristine GDL. In fuel cells built with aged and pristine GDLs, up to 200% more water was present in the GDL under the land compared to under the channel at limiting current operation.

Authors with CRIS profile

Roswitha Zeis

Involved external institutions

University of Toronto CA Canada (CA) Zentrum für Sonnenenergie- und Wasserstoff-Forschung (ZSW) DE Germany (DE) Helmholtz Institut Ulm DE Germany (DE)

How to cite

APA:

George, M.G., Liu, H., Banerjee, R., Ge, N., Shrestha, P., Muirhead, D.,... Bazylak, A. (2016). Accelerated degradation of polymer electrolyte membrane fuel cell gas diffusion layers: Mass transport resistance and liquid water accumulation at limiting current density with in operando synchrotron X-ray radiography. In D. J. Jones, H. Uchida, H. A. Gasteiger, K. Swider-Lyons, F. N. Buchi, P. N. Pintauro, B. S. Pivovar, K. E. Ayers, K. A. Perry, P. Shirvanian, A. Z. Weber, V. K. Ramani, P. Strasser, R. A. Mantz, K. Shinohara, S. Mitsushima, C. Coutanceau, J. M. Fenton, T. J. Schmidt, T. F. Fuller, S. R. Narayanan, Y. T. Kim, L. Zhuang, S. G. Sun (Eds.), ECS Transactions (pp. 89-100). Honolulu, HI, USA: Electrochemical Society Inc..

MLA:

George, Michael G., et al. "Accelerated degradation of polymer electrolyte membrane fuel cell gas diffusion layers: Mass transport resistance and liquid water accumulation at limiting current density with in operando synchrotron X-ray radiography." Proceedings of the Symposium on Polymer Electrolyte Fuel Cells 16, PEFC 2016 - PRiME 2016/230th ECS Meeting, Honolulu, HI, USA Ed. D. J. Jones, H. Uchida, H. A. Gasteiger, K. Swider-Lyons, F. N. Buchi, P. N. Pintauro, B. S. Pivovar, K. E. Ayers, K. A. Perry, P. Shirvanian, A. Z. Weber, V. K. Ramani, P. Strasser, R. A. Mantz, K. Shinohara, S. Mitsushima, C. Coutanceau, J. M. Fenton, T. J. Schmidt, T. F. Fuller, S. R. Narayanan, Y. T. Kim, L. Zhuang, S. G. Sun, Electrochemical Society Inc., 2016. 89-100.

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