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Development of palladium and niobium nanoelectrocatalysts for alkaline direct ethanol fuel cells

Grant number: 17/22976-0
Support type:Scholarships in Brazil - Doctorate (Direct)
Effective date (Start): March 01, 2018
Effective date (End): February 29, 2020
Field of knowledge:Engineering - Materials and Metallurgical Engineering
Principal Investigator:Mauro Coelho dos Santos
Grantee:Felipe de Moura Souza
Home Institution: Centro de Ciências Naturais e Humanas (CCNH). Universidade Federal do ABC (UFABC). Ministério da Educação (Brasil). Santo André , SP, Brazil


Direct Ethanol Fuel Cells (DEFCs) are electrochemical devices capable of transforming chemical energy into useful electrical energy with high efficiency and minimal emission of pollutants. The aim of this project is to synthesize, characterize, evaluate and apply binary palladium and niobium electrocatalysts in the form of nanospheres, nanocubes and nanocages for ethanol oxidation reactions (ROE) in alkaline medium and, consequently, in fuel cells. The electrocatalysts will be synthesized by the class of chemical reduction methods (Botton up) varying the chemical composition and morphology of the metals, using substrates such as carbon vulcan XC72, graphene and carbon nanotubes of multiple walls for the nanoparticles because these parameters directly influence the electrocatalytic activity of materials. The electrocatalysts will be physically characterized by x-ray diffraction, scanning electron microscopy, dispersive energy spectroscopy, electron microscopy transmission, zeta potential and by electrochemical techniques. The niobium will be used as an auxiliary metal for palladium catalysis and its use in DEFC technology is extremely relevant because Brazil has 95% of all niobium reserves worldwide. It is thus expected to develop binary electrocatalysts for DEFCs that can have high power density at ROE, with reduced manufacturing cost, stability and durability for long operating durations. In addition, applicable to the generation of electric power for small electronic devices, such as electronic chargers. (AU)

Matéria(s) publicada(s) na Agência FAPESP sobre a bolsa:
Niobium used as catalyst in fuel cell  
Articles published in other media outlets: (3 total)

Scientific publications (5)
(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)
PAZ, EDSON C.; PINHEIRO, VICTOR S.; AVEIRO, LUCI R.; SOUZA, FERNANDA L.; LANZA, V, MARCOS R.; SANTOS, MAURO G. Hydrogen Peroxide Electrogeneration by Gas Diffusion Electrode Modified with Tungsten Oxide Nanoparticles for Degradation of Orange II and Sunset Yellow FCF Azo Dyes. Journal of the Brazilian Chemical Society, v. 30, n. 9, p. 1964-1975, SEP 2019. Web of Science Citations: 0.
GENTIL, TUANI C.; PINHEIRO, VICTOR S.; PAZ, EDSON C.; SOUZA, FELIPE M.; PARREIRA, LUANNA S.; SANTOS, MAURO C. Addition of CeO2 Nanorods in PtSn-Based Electrocatalysts for Ethanol Electrochemical Oxidation in Acid Medium. Journal of the Brazilian Chemical Society, v. 30, n. 8, p. 1634-1646, AUG 2019. Web of Science Citations: 0.
PEDRON, TATIANA; SEGURA, FABIANA ROBERTA; PANIZ, FERNANDA POLIO; SOUZ, FELIPE DE MOURA; DOS SANTOS, MAURO COELHO; DE MAGALHAES JUNIOR, ARIANO MARTINS; BATISTA, BRUNO LEMOS. Mitigation of arsenic in rice grains by polishing and washing: Evidencing the benefit and the cost. JOURNAL OF CEREAL SCIENCE, v. 87, p. 52-58, MAY 2019. Web of Science Citations: 0.
SOUZA, FELIPE DE MOURA; PANIZ, FERNANDA POLLO; PEDRON, TATIANA; DOS SANTOS, MAURO COELHO; BATISTA, BRUNO LEMOS. A high-throughput analytical tool for quantification of 15 metallic nanoparticles supported on carbon black. HELIYON, v. 5, n. 3 MAR 2019. Web of Science Citations: 1.
PINHEIRO, VICTOR S.; PAZ, EDSON C.; AVEIRO, LUCI R.; PARREIRA, LUANNA S.; SOUZA, FELIPE M.; CAMARGO, PEDRO H. C.; SANTOS, MAURO C. Mineralization of paracetamol using a gas diffusion electrode modified with ceria high aspect ratio nanostructures. Electrochimica Acta, v. 295, p. 39-49, FEB 1 2019. Web of Science Citations: 3.

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