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ID: 111959.0, MPI für Dynamik komplexer technischer Systeme / Physical and Chemical Process Engineering
A model for the liquid feed direct methanol fuel cell
Authors:Scott, K.; Argyropoulos, P.; Sundmacher, K.
Language:English
Date of Publication (YYYY-MM-DD):1999
Title of Journal:Journal of Electroanalytical Chemistry
Volume:477
Issue / Number:2
Start Page:97
End Page:110
Review Status:not specified
Audience:Experts Only
Intended Educational Use:No
Abstract / Description:Mass transport is a factor which limits the performance of solid polymer electrolyte fuel cells operating at relatively high current densities. The direct methanol solid polymer electrolyte fuel cell, unlike the hydrogen cell, suffers from mass transport limitations predominantly at the anode. In the liquid feed cell the mass transport limitations arise from diffusion of methanol in the carbon cloth covering the active electrocatalyst layer and from hydrodynamic limitations in the anode flow channel. A model of the methanol mass transport processes is presented which is used to predict the effective methanol concentration at the catalyst surface and thereby the anode polarisation. This model, together with an empirical model of the open circuit voltage and the cathode overpotential model, is used to predict the overall cell voltage, current density response of the fuel cell.
External Publication Status:published
Document Type:Article
Communicated by:Kai Sundmacher
Affiliations:MPI für Dynamik komplexer technischer Systeme/Physical and Chemical Process Engineering
Identifiers:LOCALID:141
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