Modeling and Optimization of a PEMFC Catalyst Layer The University of Iowa

Format:

Conference/Event

Author/Creator:

Sui, P.-C, author.

Conference Name:

International Congress & Exposition (1999-03-01 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1999

Summary:

Two mathematical models for the catalyst layer of a PEMFC, id est 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

Notes:

Vendor supplied data

Publisher Number:

1999-01-0539

Access Restriction:

Restricted for use by site license