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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Inkjet Printed Double-Layered Cathodes for PEM Fuel Cells

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Autor(es):
Bezerra, Carlos Andre Gomes [1] ; Deiner, L. Jay [2] ; Tremiliosi-Filho, Germano [1]
Número total de Autores: 3
Afiliação do(s) autor(es):
[1] Univ Sao Paulo, Inst Quim Sao Carlos, BR-13566590 Sao Paulo - Brazil
[2] CUNY, Dept Chem, NYC Coll Technol, Brooklyn, NY 11201 - USA
Número total de Afiliações: 2
Tipo de documento: Artigo Científico
Fonte: Journal of the Electrochemical Society; v. 167, n. 12 JAN 9 2020.
Citações Web of Science: 0
Resumo

In order to optimize the mass transport, catalyst utilization, and ohmic resistance of membrane electrolyte assemblies (MEAs) in Polymer Electrolyte Membrane Fuel Cells (PEMFCs), a series of low Pt-loading double-layered cathodes was fabricated through inkjet printing. The printed cathodes were designed such that the total Pt/C catalyst loading was 0.1 mg cm(-2)with X% of the catalyst printed on the carbon substrate and (100-X)% on the Nafion membrane (X = 100, 75, 50, 25, 0). Semi-empirical fits of fuel cell polarization curves show that voltage losses vary inversely with the percentage of material printed on the carbon substrate. Accordingly, the best fuel cell performance (2.0 A cm(-2)) was observed for the cell with 100% of the Pt/C deposited on the carbon substrate. Thus, for inkjet printed low Pt-loading cathodes, the double-layered structure show a performance intermediate between MEAs fabricated in the gas diffusion electrode (GDE) method, and MEAs fabricated with catalyst deposition solely on the Nafion membrane. This performance trend is unexpected when compared to double-layered cathodes created through conventional methods of catalyst deposition. (AU)

Processo FAPESP: 13/16930-7 - Eletrocatálise V: processos eletrocatalíticos de interconversão entre as energias química e elétrica
Beneficiário:Edson Antonio Ticianelli
Linha de fomento: Auxílio à Pesquisa - Temático
Processo FAPESP: 18/08802-2 - Estruturação hierárquica de catalisadores PD/TiO2 obtidos através de impressão a jato de tinta reativade para a eletrooxidação de álcool
Beneficiário:Germano Tremiliosi Filho
Linha de fomento: Auxílio à Pesquisa - Pesquisador Visitante - Internacional