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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Electrocatalysts based on low amounts of palladium combined with tin nanoparticles and cerium dioxide nanorods for application as ADEFC anodes

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Pinheiro, Victor S. [1] ; Souza, Felipe M. [1] ; Gentil, Tuani C. [1] ; Nascimento, Aline N. [1] ; Parreira, Luanna S. [1] ; Hammer, Peter [2] ; Sairre, Mirela I. [1] ; Batista, Bruno L. [1] ; Santos, Mauro C. [1]
Total Authors: 9
[1] Univ Fed ABC UFABC, Ctr Ciencias Nat & Humanas CCNH, Lab Eletroquim & Mat Nanoestruturado LEMN, Rua Santa Adelia 166, BR-09210170 Santo Andre, SP - Brazil
[2] Univ Estadual Paulista, UNESP, Inst Quim, BR-14800060 Araraquara, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: INTERNATIONAL JOURNAL OF HYDROGEN ENERGY; v. 46, n. 79, p. 39438-39456, NOV 16 2021.
Web of Science Citations: 0

This study demonstrates the structural properties and evaluates the electrocatalytic activity of an ethanol oxidation reaction using ternary materials composed by Pd and Sn nanoparticles combined with CeO2 nanorods (NR) anchored on Vulcan carbon black to be used as an anode in alkaline direct ethanol fuel cells (ADEFCs). The highest open circuit voltage (1010 mV), maximum power (30 mW cm(-2)) and current densities (113 mA cm(-2)) were achieved using (Pd1Sn3)(10)(CeO2NR)(20)(Vn)(70), while the commercial anode values were 968 mV, 23 mW cm(-2) and 123 mA cm(-2). Although similar performance for both anodes was observed, the ternary hybrid electrocatalyst contains an 8-fold lower Pd content than the commercial material. This outcome may be justified by the higher defect density presented by the carbon support observed by Raman spectroscopy and the metal oxidation state modifications detected by X-ray photoelectron spectroscopy, as well as the electrochemically active surface area presented by the ternary electrocatalyst. The combination of higher vacancies, defects and oxygenated species in the carbon support and the synergistic effect between the oxyphilic Sn and CeO2 NR species and the Pd nanoparticles results in an electrochemical performance that makes these ternary electrocatalysts promising anode materials for ADEFC applications. (C) 2021 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved. (AU)

FAPESP's process: 17/21846-6 - Nanostructures for environmental remediation and power generation from renewable sources
Grantee:Mauro Coelho dos Santos
Support Opportunities: Program for Research on Bioenergy (BIOEN) - Regular Program Grants
FAPESP's process: 17/10118-0 - Study and application of electrochemical technology for the analysis and degradation of endocrine interferents: materials, sensors, processes and scientific dissemination
Grantee:Marcos Roberto de Vasconcelos Lanza
Support Opportunities: Research Projects - Thematic Grants
FAPESP's process: 18/18675-8 - Nanostructured electrocatalysts based on PT, PD and oxides of low cost for applications in energy and environment
Grantee:Tuani Carla Gentil
Support Opportunities: Scholarships in Brazil - Doctorate
FAPESP's process: 20/14100-0 - Sodium niobate electrodes decorated with WO3 and CeO2 for degradation of the organophosphate pesticide acephate by advanced oxidative electrochemical processes
Grantee:Felipe de Moura Souza
Support Opportunities: Scholarships in Brazil - Post-Doctoral
FAPESP's process: 15/10314-8 - Nanostructures for Phenol, Ciprofloxacin and 17±-ethinylestradiol Degradation
Grantee:Mauro Coelho dos Santos
Support Opportunities: Regular Research Grants
FAPESP's process: 17/26288-1 - Hybrid electrocatalysts based on Pd, Pt and Sn nanoparticles, and on ceria nanorods for application in fuel cells
Grantee:Victor dos Santos Pinheiro
Support Opportunities: Scholarships in Brazil - Doctorate
FAPESP's process: 17/22976-0 - Development of palladium and niobium nanoelectrocatalysts for alkaline direct ethanol fuel cells
Grantee:Felipe de Moura Souza
Support Opportunities: Scholarships in Brazil - Doctorate (Direct)