Synthesis, Characterization and CO Tolerance Evaluation in PEMFCs of Pt2RuMo Electrocatalysts

Autor(es)

Gonzalez-Hernandez, Martin ^[1] ; Antolini, Ermete ^[2] ; Perez, Joelma ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Sao Carlos Inst Chem, BR-13560970 Sao Paulo - Brazil

^[2] Scuola Sci Mat, Via 25 Aprile 22, I-16016 Genoa - Italy

• Tipo de documento: Artigo Científico
• Fonte: CATALYSTS; v. 9, n. 1 JAN 2019.
• Citações Web of Science: 6

Resumo

Pt2RuMo/C catalysts were synthesized by the modified polyol method in the presence and absence of Li(C2H5)(3)BH (LBH), annealed at 600 degrees C under H-2 atmosphere to improve the reduction of Pt and Ru to provide stronger interactions between Mo and another metals. LBH affected the physico-chemical characteristics of Pt2RuMo, that is, in the presence of LBH an increment of Mo(IV) amount and a decrease in the PtRu alloying degree were observed. The catalytic activity for hydrogen oxidation in the presence and absence of CO (CO tolerance) of the Pt2RuMo/C catalysts as anodes in polymer electrolyte membrane fuel cells (PEMFCs) was compared to that of a commercial PtRu/C catalyst. The results indicated that the CO tolerance increased with an increase in Mo(IV) content, but the stability increased with an increment of the amount of Ru oxides in the catalysts. (AU)

• Processo FAPESP: 13/16930-7 - Eletrocatálise V: processos eletrocatalíticos de interconversão entre as energias química e elétrica
• Beneficiário: Edson Antonio Ticianelli
• Modalidade de apoio: Auxílio à Pesquisa - Temático