Comparative analysis between mass and volume of catalysts as a criterion to determine the optimal quantity of nafion ionomer in catalysts layers
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2015
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International Journal of Hydrogen Energy
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Studies in the proton exchange membrane fuel cell (PEMFC) have evaluated different
catalyst systems, using fixed mass percentages as the criterion to prepare catalyst layers.
Some studies presented masses between 20 and 40% of ionomer in the catalyst layer as
best composition; however, they also showed that any modification in the catalyst structure, such as support material or metal percentage, changes remarkably the membrane
electrode assembly (MEA) performances. Thus, the volume of a catalyst used changes the
amount of Nafion ionomer required to prepare catalyst layers with high efficiency.
Consequently, to compare different catalysts in their highest performance conditions, it
has become necessary to develop a volumetric criterion to calculate the quantity of Nafion
ionomer necessary for each catalyst. In this work, the masses and the volumes of catalysts
were compared to three other catalysts as the criterion to transpose the adjustment of the
catalyst layer composition made to Pd/C 20%. The use of catalyst volume as the criterion to
calculate the quantity of Nafion ionomer in the catalyst layer resulted in MEAs significantly
more efficient than those prepared according to the fixed mass percentage.
Como referenciar
BONIFACIO, RAFAEL N.; OLIVEIRA NETO, ALMIR; LINARDI, MARCELO. Comparative analysis between mass and volume of catalysts as a criterion to determine the optimal quantity of nafion ionomer in catalysts layers. International Journal of Hydrogen Energy, v. 40, n. 6, p. 2840-2849, 2015. DOI: 10.1016/j.ijhydene.2014.12.114. Disponível em: http://repositorio.ipen.br/handle/123456789/23792. Acesso em: 12 May 2024.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.