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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.)

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

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Author(s):
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]
Total Authors: 9
Affiliation:
[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
Total Affiliations: 3
Document type: Journal article
Source: Journal of Applied Electrochemistry; v. 45, n. 7, SI, p. 647-656, JUL 2015.
Web of Science Citations: 14
Abstract

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)

FAPESP's process: 14/04100-2 - Development and application of Ni-M catalysts (m = Cu, Fe or Mo) for the manufacture of SOFC fuel cells with anodes fed with ethanol
Grantee:Rafael Machado Reis
Support type: Scholarships in Brazil - Post-Doctorate