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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Investigation of Ni-based alloy/CGO electro-catalysts as protective layer for a solid oxide fuel cell anode fed with ethanol

Texto completo
Autor(es):
Lo Faro, M. [1] ; Reis, R. M. [2] ; Saglietti, G. G. A. [2] ; Zignani, S. C. [1] ; Trocino, S. [1] ; Frontera, P. [3] ; Antonucci, P. L. [3] ; Ticianelli, E. A. [2] ; Arico, A. S. [1]
Número total de Autores: 9
Afiliação do(s) autor(es):
[1] CNR, Inst Adv Energy Technol, I-98126 Messina - Italy
[2] USP IQSC, BR-13560970 Sao Carlos, SP - Brazil
[3] Univ Mediterranea Reggio Calabria, I-89100 Reggio Di Calabria - Italy
Número total de Afiliações: 3
Tipo de documento: Artigo Científico
Fonte: Journal of Applied Electrochemistry; v. 45, n. 7, SI, p. 647-656, JUL 2015.
Citações Web of Science: 15
Resumo

Ni-based alloys were prepared by using the oxalate method and subsequent in-situ reduction. The crystallographic phase and microstructure of the catalysts were investigated. These bimetallic alloys were mixed with gadolinium-doped ceria in order to obtain a composite material with mixed electronic-ionic conductivity. Catalytic and electrocatalytic properties of the composite materials for the conversion of ethanol were investigated. Electrochemical tests were carried out by utilizing the Ni-based alloy/CGO cermet as a barrier layer in a conventional anode-supported solid oxide fuel cell (SOFC). A comparative study between the modified cells and a conventional anode-supported SOFC without the protective layer was made. The aim was to efficiently convert the fuel directly into electricity or syngas (H-2 and CO) just before the conventional anode support. In accordance with the ex-situ catalytic tests, the SOFC anode modified with Ni-Co/CGO showed superior performance towards the direct utilization of dry ethanol than the bare anode and that modified with Ni-Cu/CGO. A peak power of 550 mW cm(-2) was achieved with the dry ethanol-fed Ni-Co/CGO pre-layer modified-cell at 800 A degrees C. A total low frequency resistance of < 0.5 Omega cm(2) at 0.8 V of cell voltage was recorded in the presence of ethanol directly fed to the SOFC. (AU)

Processo FAPESP: 14/04100-2 - Desenvolvimento e aplicação de catalisadores Ni-M (m = Cu, Fe ou Mo) para confecção de ânodos de células a combustível do tipo SOFC alimentadas com etanol
Beneficiário:Rafael Machado Reis
Linha de fomento: Bolsas no Brasil - Pós-Doutorado