Direct numerical simulation (DNS) modeling of PEFC electrodes

Part I. Regular microstructure

Guoqing Wang, Partha P. Mukherjee, Chao-yang Wang

Research output: Contribution to journalArticle

55 Citations (Scopus)

Abstract

A direct numerical simulation (DNS) model is developed to achieve pore-level description of polymer electrolyte fuel cell (PEFC) electrodes. The DNS method solves point-wise accurate conservation equations directly on an electrode microstructure comprising of various phases and hence utilizes the intrinsic transport properties of each phase. Idealized two- and three-dimensional regular microstructures are constructed to represent the porous cathode catalyst layer. Various voltage losses identified from the simulation results are compared with experimental observations. This pore-scale model is further applied to study the morphological effects, such as pore size, layer thickness and porosity, on the performance of the cathode catalyst layer.

Original languageEnglish (US)
Pages (from-to)3139-3150
Number of pages12
JournalElectrochimica Acta
Volume51
Issue number15
DOIs
StatePublished - Apr 1 2006

Fingerprint

Direct numerical simulation
Electrolytes
Fuel cells
Polymers
Cathodes
Microstructure
Electrodes
Catalysts
Computer simulation
Transport properties
Pore size
Conservation
Porosity
Electric potential

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Electrochemistry

Cite this

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abstract = "A direct numerical simulation (DNS) model is developed to achieve pore-level description of polymer electrolyte fuel cell (PEFC) electrodes. The DNS method solves point-wise accurate conservation equations directly on an electrode microstructure comprising of various phases and hence utilizes the intrinsic transport properties of each phase. Idealized two- and three-dimensional regular microstructures are constructed to represent the porous cathode catalyst layer. Various voltage losses identified from the simulation results are compared with experimental observations. This pore-scale model is further applied to study the morphological effects, such as pore size, layer thickness and porosity, on the performance of the cathode catalyst layer.",
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Direct numerical simulation (DNS) modeling of PEFC electrodes : Part I. Regular microstructure. / Wang, Guoqing; Mukherjee, Partha P.; Wang, Chao-yang.

In: Electrochimica Acta, Vol. 51, No. 15, 01.04.2006, p. 3139-3150.

Research output: Contribution to journalArticle

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