Water management in cathode gas diffusion layers and catalyst layers of PEFCs (Polymer Electrolyte Fuel Cells) plays an important role toward the obtainment of optimal performance. Flooding may indeed occur under different operating conditions, in these components, requiring special attention both in the development and in the design processes. Simulation is a reliable tool to support the design of PEFCs, and thus provide designers with a better interpretation of experimental data. Flooding within porous media is still a critical issue for multiphase flow fuel cell modeling, representing a challenge in terms of model reliability. This paper aims at extending the validity of a literature available 1D GDL multiphase model presented in Ref. [24]. Special attention has been devoted to the analysis of the difference between multiphase and non-multiphase (multispecies) approaches, and to the 3D aspects of cell design related to flooding issues. Results indicate that flooding must be treated as a 3D phenomenon, as it has a different impact on the different active area regions. In fact, although the land is the most affected zone, current is mainly limited in the channel zone close to the gas inlet section.

Cordiner, S., Lanzani, S., Mulone, V. (2010). 3D effects of water-saturation distribution on polymeric electrolyte fuel cell (PEFC) performance. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 36(16), 10366-10375 [10.1016/j.ijhydene.2010.09.063].

3D effects of water-saturation distribution on polymeric electrolyte fuel cell (PEFC) performance

CORDINER, STEFANO;MULONE, VINCENZO
2010-11-01

Abstract

Water management in cathode gas diffusion layers and catalyst layers of PEFCs (Polymer Electrolyte Fuel Cells) plays an important role toward the obtainment of optimal performance. Flooding may indeed occur under different operating conditions, in these components, requiring special attention both in the development and in the design processes. Simulation is a reliable tool to support the design of PEFCs, and thus provide designers with a better interpretation of experimental data. Flooding within porous media is still a critical issue for multiphase flow fuel cell modeling, representing a challenge in terms of model reliability. This paper aims at extending the validity of a literature available 1D GDL multiphase model presented in Ref. [24]. Special attention has been devoted to the analysis of the difference between multiphase and non-multiphase (multispecies) approaches, and to the 3D aspects of cell design related to flooding issues. Results indicate that flooding must be treated as a 3D phenomenon, as it has a different impact on the different active area regions. In fact, although the land is the most affected zone, current is mainly limited in the channel zone close to the gas inlet section.
1-nov-2010
Pubblicato
Rilevanza internazionale
Articolo
Sì, ma tipo non specificato
Settore ING-IND/08 - MACCHINE A FLUIDO
English
Con Impact Factor ISI
Cordiner, S., Lanzani, S., Mulone, V. (2010). 3D effects of water-saturation distribution on polymeric electrolyte fuel cell (PEFC) performance. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 36(16), 10366-10375 [10.1016/j.ijhydene.2010.09.063].
Cordiner, S; Lanzani, S; Mulone, V
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/23695
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