Combustion synthesis of Sm0.5Sr0.5CoO3−x and La0.6Sr0.4CoO3−x nanopowders for solid oxide fuel cell cathodes

Bansal, Narottam P.; Zhong, Zhou

doi:10.1016/j.jpowsour.2005.09.057

Cited by 122 publications

(80 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The cathode does, however, appear to have low porosity and significant particle agglomeration. This is in agreement with a recent study by Bansal and Zhong (29), which reported that combustion-synthesized SSC powders become increasingly dense when fired as loose powders at temperatures greater than 1000ºC. Cathode porosity in this study was introduced not only by the deposition of the slurry through the porous screen but also by the pyrolysis of organic binder and solvents from the cathode slurry at sintering temperatures.…”

Section: Resultssupporting

confidence: 92%

Electrochemical Investigation of LSGMC-Composite Cathodes on LSGM-Substrate

Do¹,

Guo²,

Lu³

et al. 2008

ECS Trans.

View full text Add to dashboard Cite

16 Ω were measured for LSCF/LSGMC composite cathode on LSGM substrate at 800ºC in air. Low-frequency secondary arcs in the impedance spectra of LSCF/LSGMC cathode coupled with low current density and low cathode porosity suggested possible mass transfer limitations. The LSCF/LSGMC composite electrode performed best at 800ºC (0.11 A/cm 2 at 0.045 V overpotential) while the BSCF/LSGMC performed best at the lowest temperature investigated (0.1 A/cm 2 at 700ºC and 0.04 V overpotential).

show abstract

Section: Resultssupporting

confidence: 92%

Electrochemical Investigation of LSGMC-Composite Cathodes on LSGM-Substrate

Do¹,

Guo²,

Lu³

et al. 2008

ECS Trans.

View full text Add to dashboard Cite

show abstract

“…In the last fifteen years they have been studied as components for solid oxide fuel cells (SOFCs) [5,6]. They have been synthesized using several techniques, from the most common and ancient method -as the ceramic [7] -to the newer and sophisticated ones-as the hydrazine method [ 8] or the combustion synthesis [9].…”

Section: Introductionmentioning

confidence: 99%

Room temperature mechanosynthesis of the La1−Sr MnO3± (0≤x≤1) system and microstructural study

Sayagués

Córdoba

Gotor

2012

Journal of Solid State Chemistry

View full text Add to dashboard Cite

Monophase nanocrystalline powders belonging to the La 1-x Sr x MnO 3±δ system (0≤x≤1) with a perovskite structure have been obtained by mechanochemistry synthesis using a planetary ball milling equipment from La 2 O 3 , SrO, and Mn 2 O 3 mixtures. The solid state reaction was complete after one hour of milling treatment. For all the compositional range, the diffraction domain was very small and the structure appeared as a pseudo cubic perovskite. After annealing at 1100°C under static air, the symmetry evolution due to the La substitution by Sr was analyzed by x-ray and electron diffraction. Samples with x = 0, 0.25, 0.5, and 0.75 were assigned to R-3c space group (167) in the rhombohedral system and perovskite structure. However, the symmetry of the last term of the system (x=1), SrMnO 3±δ sample, changed to P6 3 /mmc space group (194) in the hexagonal system. The terms with x = 0.8, 0.85, and 0.9 presented mainly rhombohedral symmetry.

show abstract

“…(Bansal & Zhong, 2006;Berger et al, 2007;Dutta et al, 2009;Liu & Zhang, 2008). This method consist on a highly exothermal self-combustion reaction between the fuel (usually glycine, urea or alanine) and the oxidant (metal nitrates), that produces enough heat to obtain the ceramic powders.…”

Section: Introductionmentioning

confidence: 99%