6533b85cfe1ef96bd12bc029
RESEARCH PRODUCT
Flash microwave synthesis and sintering of nanosized La0.75Sr0.25Cr0.93Ru0.07o3–δ for fuel cell application.
Lionel CombemaleGilles CabocheDidier Stuergasubject
[CHIM.INOR] Chemical Sciences/Inorganic chemistrySolid oxide fuel cell (SOFC)Analytical chemistryNanoparticleSintering02 engineering and technology[CHIM.INOR]Chemical Sciences/Inorganic chemistry010402 general chemistryPerovskite01 natural sciencesAutoclaveInorganic ChemistryAdsorptionMaterials ChemistryChemical synthesisPhysical and Theoretical ChemistryChemistry[ CHIM.INOR ] Chemical Sciences/Inorganic chemistry021001 nanoscience & nanotechnologyCondensed Matter Physics0104 chemical sciencesElectronic Optical and Magnetic MaterialsMicrowave heatingCeramics and CompositesNanoparticlesSolid oxide fuel cellParticle size0210 nano-technologyPowder diffractionMicrowavedescription
International audience; Perovskite-oxide nanocrystals of La0.75Sr0.25Cr0.93Ru0.07O3–δ with a mean size around 10 nm were prepared by microwave flash synthesis. This reaction was performed in alcoholic solution using metallic salts, sodium ethoxide and microwave autoclave. The obtained powder was characterised after purification by energy dispersive X-ray analysis (EDX), X-ray powder diffraction (XRD), BET adsorption technique, photon correlation spectroscopy (PCS) and transmission electron microscopy (TEM). The results show that integrated perovskite-type phase and uniform particle size were obtained in the microwave treated samples. At last the synthesised powder was directly used in a sintering process. A porous solid, in accordance with the expected applications, was then obtained at low sintering temperature (1000 °C) without use of pore forming agent.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2009-10-01 |