Title

Analytical Current-Potential Relation for Coupled Activation, Liquid Diffusion and OHMIC Losses in Porous Gas Diffusion Electrodes

Abstract

In earlier work on a flooded agglomerate model for molten carbonate fuel cell (MCFC) cathodes, analytical current density-overpotential expressions were developed. In computing MCFC performance, some way of interpolating is needed in order to describe cathode performance. Rather than impose arbitrary criteria for interpolating among and 'crossing-over' between the various analytical limiting forms, a more unified approach was undertaken. Current densities calculated using this analytical method have been compared extensively with exact results found via numerical integration. Over a broad range of conditions, agreement was found to within 2-3% in all cases studied.

Meeting Name

Fall Meeting (168th Society Meeting), the Electrochemical Society (1985: Las Vegas, NV)

Department(s)

Physics

Keywords and Phrases

Electric Conductivity - Mathematical Models; Electrodes, Electrochemical - Electric Properties; Gases - Diffusion; Liquids - Diffusion; Coupled Activation; Current-potential Relation

International Standard Serial Number (ISSN)

0160-4619

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1985 Electrochemical Society, Inc., All rights reserved.

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