| Full text | |
| Author(s): |
Lo Faro, M.
;
Reis, R. M.
;
Saglietti, G. G. A.
;
Zignani, S. C.
;
Trocino, S.
;
Frontera, P.
;
Antonucci, P. L.
;
Ticianelli, E. A.
;
Arico, A. S.
Total Authors: 9
|
| Document type: | Journal article |
| Source: | Journal of Applied Electrochemistry; v. 45, n. 7, p. 10-pg., 2015-07-01. |
| 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 Opportunities: | Scholarships in Brazil - Post-Doctoral |