Modeling and Optimization of a PEMFC Catalyst Layer

Two mathematical models for the catalyst layer of a PEMFC, i.e. the macro-homogenous model and the agglomerate model are evaluated in this paper. The characteristics of both models and the application of both models to optimal design of catalyst layer are discussed. The one-dimensional governing equations of both models are solved analytically or numerically using the finite difference method. A simplified, analytic solution of the macro-homogenous model under ideal conditions is derived. Parametric study and sensitivity analyses are performed for the agglomerate model to identify the parameters that have significant influences on the performance of a PEMFC. Several parameters including the electrolyte thickness, porosity, oxygen permeability, and layer thickness are found to affect the limiting current significantly. A solid model is developed to visualize the structure of a catalyst layer. This solid model is used to estimate effective transport properties. A scheme for optimization of the catalyst layer design is proposed based on the findings of the analysis.

• Record URL:
  • https://doi.org/10.4271/1999-01-0539
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/01487191
• Supplemental Notes:
  • Abstract reprinted with permission of SAE International.
• Authors:
  • Sui, P
  • Chen, Long
  • Seaba, James P
  • Wariishi, Yoshinori
• Conference:
  • International Congress & Exposition
  • Location: Detroit Michigan, United States
  • Date: 1998-2-23 to 1998-2-26
• Publication Date: 1998-1-23

Language

• English

Media Info

• Media Type: Web
• Serial:
  • SAE Technical Paper
  • Publisher: Society of Automotive Engineers (SAE)
  • ISSN: 0148-7191
  • EISSN: 2688-3627
  • Serial URL: http://papers.sae.org/

Subject/Index Terms

• TRT Terms: Catalysts; Mathematical models; Simulation
• Subject Areas: Highways; Vehicles and Equipment;

Filing Info

• Accession Number: 01794096
• Record Type: Publication
• Source Agency: SAE International
• Report/Paper Numbers: 1999-01-0539
• Files: TRIS, SAE
• Created Date: Dec 9 2021 10:17AM