Influence of the relative volumes between catalyst and nafion ionomer in the catalyst layer efficiency
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International Journal of Hydrogen Energy
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Over the years, studies have analyzed the composition of the catalyst layer using commercial platinum catalyst, supported on Vulcan XC72 with 20% of metal loading (Pt/C
20%Mw), and found that values between 20 and 40% of Nafion ionomer related to the mass
of the catalyst layer (% NIW) have resulted in more efficient electrodes for PEMFC. Recent
studies with catalysts synthesized on Vulcan XC72 resulted in 59% NIW as the best
formulation. In this work, the commercial and the synthesized Pt/C 20%Mw catalyst were
evaluated by Gas Pycnometry, Gas Adsorption (through BET and BJH), and Mercury Intrusion Porosimetry. The results showed volumetric differences between the Vulcan XC72
used in commercial catalyst and the Vulcan XC72 commercially available for synthesis (as
purchased). These differences impair the synthesized catalyst in comparison with the
commercial one. Therefore, the relationship between the quantities of catalysts and Nafion
ionomer on the catalyst layers must be calculated as a function of the catalysts volumes.
Como referenciar
BONIFACIO, RAFAEL N.; OLIVEIRA NETO, ALMIR; LINARDI, MARCELO. Influence of the relative volumes between catalyst and nafion ionomer in the catalyst layer efficiency. International Journal of Hydrogen Energy, v. 39, p. 14680-14689, 2014. DOI: 10.1016/j.ijhydene.2014.07.004. Disponível em: http://repositorio.ipen.br/handle/123456789/9032. Acesso em: 24 Mar 2026.
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.