Fast and Inexpensive Synthesis of Multilayer Graphene Used as Pd Support in Alkaline Direct Ethanol Fuel Cell Anode

Autor: Mauro C. Santos, Victor S. Pinheiro, Thays de Souza Lima, Bruno Lemos Batista, Fábio Ruiz Simões, Peter Hammer, Luanna S. Parreira, Felipe M. Souza, Lúcia Codognoto, Paula Böhnstedt
Přispěvatelé: Universidade Federal do ABC (UFABC), Universidade Federal de São Paulo (UNIFESP), Universidade Estadual Paulista (UNESP)
Rok vydání: 2021
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Zdroj: Scopus
Repositório Institucional da UNESP
Universidade Estadual Paulista (UNESP)
instacron:UNESP
ISSN: 1868-5994
1868-2529
DOI: 10.1007/s12678-021-00685-4
Popis: Made available in DSpace on 2022-04-29T08:32:35Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-01-01 Multilayer graphene (G-US) and multilayer graphene muffled (Gm-US) produced by liquid exfoliation ultrasound were used as support for Pd nanoparticles with a load of 20 wt% for application in an alkaline direct ethanol fuel cell (ADEFC) anode. The multilayer graphene–based electrocatalyst (Pd/G-US) exhibited superior current density and less positive onset potential for ethanol oxidation reaction (EOR) than the commercial Pd/C (AA). Also, the Pd/G-US electrocatalyst showed the less positive onset potential for CO oxidation. In ADEFC experiments, the Pd/G-US catalyst exhibited a superior performance with 38 mW cm−2. The findings suggest that the defective graphene structure promotes electron transport, and the presence of oxygenated species increases hydrophilicity facilitating the oxidation of intermediates. Hence, the synthesized material can be considered as promising support for an anode in ADEFC. Graphical abstract: [Figure not available: see fulltext.] Laboratório de Eletroquímica e Materiais Nanoestruturados (LEMN) – Centro de Ciências Naturais e Humanas (CCNH) Universidade Federal Do ABC (UFABC), Rua Santa Adélia 166, Bairro Bangu Departamento de Química Instituto de Ciências Químicas E Farmacêuticas Universidade Federal de São Paulo (UNIFESP), Rua Prof. Artur Riedel 275, Jd. Eldorado Instituto Do Mar Universidade Federal de São Paulo (UNIFESP), Rua Carvalho de Mendonça, 144 Departamento de Físico-Química Instituto de Química de Araraquara Universidade Estadual Paulista (UNESP) Departamento de Físico-Química Instituto de Química de Araraquara Universidade Estadual Paulista (UNESP)
Databáze: OpenAIRE
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