Reference : Enhancement of the power factor of [Bi1.68Ca2O4](RS)[CoO2](1.69) - Ag composites prep...
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Physics
Physical, chemical, mathematical & earth Sciences : Chemistry
http://hdl.handle.net/2268/78959
Enhancement of the power factor of [Bi1.68Ca2O4](RS)[CoO2](1.69) - Ag composites prepared by the spray-drying method
English
Rivas-Murias, B. [Université de Liège - ULg > > LCIS-Greenmat > >]
Muguerra, Hervé [Université de Liège - ULg > Département de chimie (sciences) > LCIS - GreenMAT >]
Traianidis, M. [BCRC - Mons > > > >]
Henrist, Catherine mailto [Université de Liège - ULg > Département de chimie (sciences) > LCIS - GreenMAT >]
Vertruyen, Bénédicte mailto [Université de Liège - ULg > Département de chimie (sciences) > Chimie inorganique structurale >]
Cloots, Rudi mailto [Université de Liège - ULg > Département de chimie (sciences) > LCIS - GreenMAT - Doyen de la Faculté des Sciences >]
2010
Solid State Sciences
Elsevier Science
12
8
1490-1495
Yes (verified by ORBi)
International
1293-2558
Paris
France
[en] Oxides ; Layered cobaltite ; Composite ; Spray-drying technique ; Thermoelectric properties
[en] [Bi1.68Ca2O4](RS)[CoO2](1.69) (BCCO) sample and Ag-BCCO composites (with 10, 20 or 30 wt% Ag) have been prepared by the spray-drying technique and uniaxially/isostatically packed. Scanning electron microscopy reveals that the Ag particles are well distributed in the BCCO cobaltite matrix at low Ag contents. The Ag particles have an important effect on densification and grain orientation of the samples, with a direct impact on their electrical conductivity. The electrical conductivity is higher for the uniaxial samples and increases with the Ag content up to 20% in weight, while the Seebeck coefficient is hardly affected. These features induce an improvement of the power factor, reaching a maximum value of 2.2 mu W K-2 cm(-1) at similar to 1050 K for the uniaxial sample with 20 wt% Ag. Our results suggest that the spray-drying technique is a promising method to obtain composites with a well-dispersed secondary phase. (C) 2010 Elsevier Masson SAS. All rights reserved.
Politique Scientifique Fédérale (Belgique) = Belgian Federal Science Policy
Researchers ; Professionals
http://hdl.handle.net/2268/78959
10.1016/j.solidstatesciences.2010.06.014
The following article appeared in Solid State Sciences and may be found on the editor website http://www.sciencedirect.com/

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