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ID: 111963.0, MPI für Dynamik komplexer technischer Systeme / Physical and Chemical Process Engineering
Limiting current behaviour of the direct methanol fuel cell
Authors:Scott, K.; Taama, M.; Kramer, S.; Argyropoulos, P.; Sundmacher, K.
Language:English
Date of Publication (YYYY-MM-DD):1999
Title of Journal:Electrochimica Acta
Volume:45
Issue / Number:6
Start Page:945
End Page:957
Review Status:not specified
Audience:Experts Only
Intended Educational Use:No
Abstract / Description:Limiting current density data for a liquid feed direct methanol fuel cell best on a Nation solid polymer electrolyte membrane are reported. The cell uses a membrane electrode assembly composed of porous Pt-Ru-carbon supported catalyst anode, Pt-carbon supported cathode covered by carbon cloth backing layers. The effect of cell temperature, air cathode pressure, methanol fuel flow rate, temperature and methanol concentration on the limiting current behaviour are described. Limiting current data are interpreted in terms of hydrodynamics and diffusion limiting effects in the porous catalyst structure and carbon cloth backing layers. In practical fuel cells the temperature of the feed and the cell are different due to heat transfer requirements and this factor is shown to influence performance. It is also demonstrated that cell operation is possible with a methanol solution vaporised into an inert gas stream.
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:138
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