New routes for Pt-Sn-Eu/C catalysts for ethanol oxidation reaction

• Grant number: 15/13218-0
• Support Opportunities: Scholarships abroad - Research Internship - Doctorate
• Start date: October 19, 2015
• End date: March 18, 2016
• Field of knowledge: Physical Sciences and Mathematics - Chemistry - Physical-Chemistry
• Principal Investigator: Joelma Perez
• Grantee: Patricia Gon Corradini
• Supervisor: Kouakou Boniface Kokoh
• Host Institution: Instituto de Química de São Carlos (IQSC). Universidade de São Paulo (USP). São Carlos , SP, Brazil
• Institution abroad: Université de Poitiers, France
• Associated to the scholarship: 12/12189-8 - Investigation of platinum-rare earth nanocatalysts supported in carbon for direct ethanol fuel cells, BP.DR

Abstract

Direct ethanol fuel cells (DEFC) have emerged in the last years as a promising alternative of energy source for portable applications. Platinum is considered as one of the best catalysts for ethanol oxidation, although it can be poisoned at low potentials with reaction intermediates that block the reaction to proceed. Efforts to mitigate the poisoning of Pt have been concentrated on the addition of co-catalysts. The results have encouraged the use of Pt-rare earth-based anode catalysts in DEFC. Until now, binary PtLn/C and ternary PtSnLn/C catalysts (Ln: La, Ce, Pr and Eu) were tested for ethanol oxidation reaction in ultra-thin layer configuration and unit Solid Polymer Electrolyte Fuel Cell (SPEFC) configuration. However, the improvement of the synthetic route is desired to aim at obtaining more homogeneity at particle size and better nanoparticles distribution of carbon support. The Institut de Chimie des Milieux et Matériaux de Poitiers is known for important research in synthesis of catalysts. For the abroad internship, the proposal involves: i) the synthesis of PtSnLn/C with different routes such as Bönnemann method, Bromide Anion Exchange method, microwave-assisted heating or another available approach and ii) the evaluation of the catalysts in acid and alkaline media. This information will be important to elucidate the rare earth elements effect on the PtSn materials and to correlate the physical proprieties of these electrodes to their activity.

Scientific publications

(4)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

CORRADINI, PATRICIA GON; PEREZ, JOELMA. Activity, mechanism, and short-term stability evaluation of PtSn-rare earth/C electrocatalysts for the ethanol oxidation reaction. Journal of Solid State Electrochemistry, v. 22, n. 5, SI, p. 1525-1537, MAY 2018. (15/13218-0, 13/16930-7, 12/12189-8)

CORRADINI, P. G.; SANTOS, N. A.; PEREZ, J.. Pt-Sn-Eu/C Catalysts: Application of Rare Earth Metals as Anodes in Direct Ethanol Fuel Cells. FUEL CELLS, v. 18, n. 1, p. 73-81, FEB 18 2018. (13/17549-5, 15/13218-0, 13/16930-7, 12/12189-8)

CORRADINI, PATRICIA GON; PEREZ, JOELMA. Activity, mechanism, and short-term stability evaluation of PtSn-rare earth/C electrocatalysts for the ethanol oxidation reaction. Journal of Solid State Electrochemistry, v. 22, n. 5, p. 13-pg., 2018-05-01. (13/16930-7, 15/13218-0, 12/12189-8)

CORRADINI, PATRICIA GON; HERNANDEZ, MARTIN EMILIO GONZALEZ; DE MORAIS, CLAUDIA; KOKOH, K. BONIFACE; NAPPORN, TEKO W.; PEREZ, JOELMA. Rare-earth modified Pt-Sn catalysts obtained via bromide anion exchange for enhanced ethanol electrooxidation in alkaline medium. Journal of Solid State Electrochemistry, v. 27, n. 10, p. 12-pg., 2023-06-14. (15/13218-0, 12/12189-8)