Título:
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Estimation of the membrane methanol diffusion coefficient from open circuit voltage measurements in a direct methanol fuel cell
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Autores:
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Barragán García, Vicenta María ;
Heinzel, A.
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Tipo de documento:
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texto impreso
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Editorial:
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Elsevier Science BV, 2002-01-15
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Dimensiones:
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application/pdf
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Nota general:
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info:eu-repo/semantics/restrictedAccess
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Idiomas:
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Palabras clave:
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Estado = Publicado
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Materia = Ciencias: Física: Termodinámica
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Tipo = Artículo
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Resumen:
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Direct methanol fuel cells (DMFCs) are attractive for several applications, however, at present, methanol crossover from the anode to the cathode appears to be a major limitation. For this reason, as one of the alternatives, membrane technology tries to obtain new methanol-impermeable polymer electrolytes. In this sense, it would be interesting to develop easy methods to check the new materials in relation to the methanol transport. In this work, a simple model is presented which permits to estimate easily the methanol diffusion coefficient of the membrane of a DMFC from open circuit voltage (OCV) measurements. The model has been checked in a DMFC using Nafion membranes as electrolyte.
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En línea:
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https://eprints.ucm.es/id/eprint/21057/1/BARRAG%C3%81N24NO.pdf
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