Preparation of LaMnO3 perovskite thin films by suspension plasma spraying for SOFC cathodes

Monterrubio-Badillo, C.; Ageorges, Hélène; Chartier, Thierry; Coudert, Jean-François; Fauchais, Pierre

doi:10.1016/j.surfcoat.2005.01.002

Cited by 82 publications

(44 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…All of these results are in accordance with our previous work [7], which demonstrates the scalability of mechanosynthesis as it is possible to obtain 6 g instead of 2 g (in 1 h of milling) of LSM material only by incrementing slightly the milling time (see table I). This makes evident some of the advantages of mechanochemistry over other synthetic methods, since the traditional ceramic method requires a temperature of 1000-1200 ºC [13]; or its scalability contrasted with Pechini, citrate [14] or plasmaspraying methods [15][16][17].…”

Section: Microstructural and Structural Analysismentioning

confidence: 99%

Chemical and electrical properties of LSM cathodes prepared by mechanosynthesis

Moriche

Marrero-López

Gotor

et al. 2014

Journal of Power Sources

View full text Add to dashboard Cite

Mechanosynthesis of La 1-x Sr x MnO 3 (x = 0, 0.25, 0.5, 0.75 and 1) was carried out at room temperature from stoichiometric mixtures of La 2 O 3 , Mn 2 O 3 and SrO, obtaining monophasic powders with the perovskite structure. Physical properties of these materials and their chemical compatibility with the electrolyte yttria stabilized zirconia (YSZ), which depend strongly on the La/Sr ratio, were evaluated to corroborate availability to be implemented as cathode material in solid oxide fuel cells (SOFCs).Electrical conductivity values in air ranged between 100-400 Scm -1 in the temperature range of 25-850 °C. Samples presented low reactivity with YSZ in the working temperature range (600-1000 ºC) maintaining the grain size small enough to preserve the catalytic activity for oxygen reduction.

show abstract

Section: Microstructural and Structural Analysismentioning

confidence: 99%

Chemical and electrical properties of LSM cathodes prepared by mechanosynthesis

Moriche

Marrero-López

Gotor

et al. 2014

Journal of Power Sources

View full text Add to dashboard Cite

show abstract

“…Perovskite ferroelectric materials all have the general chemical formula ABO 3 , where A and B are cations. Typically the A cation will be around 1.2-1.6 Å in radius (similar to the oxygen ions) whilst the B cations perovskite-type oxides have attracted great interest in both applied and fundamental areas of solidstate chemistry, physics, advanced materials and catalysis (Monterrubio-Badillo et al, 2006). In this paper, LaMnO 3 has been synthesized by the sol-gel method using ethanol as solvent and characterized for determined thermal, physical, mechanical, magnetic property and structural properties.…”

Section: Introductionmentioning

confidence: 99%

Producción y caracterización de láminas delgadas de LaMnO<sub>3</sub> preparadas por la técnica de Sol-Gel

Ebeoğlugil

2017

REVMETAL

View full text Add to dashboard Cite

ABSTRACT:In this study, lanthanum manganite (LaMnO 3 ) thin films were prepared by sol-gel method for magnet technology. With this context, precursor solutions with low contact angles were synthesized from all nitrate salts of the respective cations (La, Mn), using ethanol as solvent and acetyl acetone as chelating agents. A dense amorphous film was deposited on silicon (Si) substrate. Crystallization of the films was carried out at temperatures between 850 and 1000 °C. The thermal, phase, elemental, microstructural and magnetic properties of the obtained samples were determined by TG/DTA, FTIR, XRD, XPS, SEM and VSM. The results show that sustained perovskite polycrystalline films were grown on the [100]-oriented Si substrates. In addition, the films show ferromagnetic behavior.

show abstract

“…Estos dispositivos son muy eficientes en la conversión de energía química a eléctrica, debido a que no tienen piezas móviles y, por tanto, no están afectados por el ciclo de Carnot [3]; en principio, están conformados por tres componentes básicos: un ánodo (electrodo de combustible), un cátodo (electrodo de aire) y un electrolito (polimé-rico o cerámico); dependiendo del tipo de electrolito, pueden clasificarse en pilas de combustible de baja, media y alta temperatura de operación. Las pilas de combustible de baja temperatura funcionan de forma directa con gases de hidrógeno y oxígeno; entre ellas encontramos, principalmente, las denominadas pilas de combustible de intercambio protónico (PEMFC), de metanol directo (DMFC) y de ácido fosfórico (PAFC).…”

Section: Introductionunclassified

“…3 .9H 2 O, 99,9 %, ajustados a una concentración 1.0 M y ácido cítrico só-lido monohidratado 99,99 %. La disolución de los iones metálicos se dosificó en un reactor de vidrio dotado con agitación magnética (150 rpm), control de temperatura y reflujo.…”

Section: Introductionunclassified

Síntesis y caracterización del sistema La0,8Sr0,2MnO3

Cruz-Pacheco

Cuaspud

2015

View full text Add to dashboard Cite

ResumenEste trabajo reporta la síntesis y la caracterización de un óxido tipo La 0,8 Sr 0,2 MnO 3 , usando una ruta de síntesis de química húmeda, con la cual fue obtenido un material cerámico con propiedades fisicoquímicas y características estructurales de gran importancia para aplicación como componente electródico para uso en pilas de combustible de óxido sólido (SOFC). El material sintetizado se caracterizó por difracción de rayos X (XRD), obteniéndose un material con estructura tipo perovskita. Los resultados derivados de microscopia electrónica de transmisión de alta resolución (HRTEM) confirmaron la obtención de sólidos de morfología regular orientados de forma preferente en el plano (1 1 2), con distancias interplanares d calculadas de 0,25 nm con base en los resultados de HRTEM y XRD. La composición del material La 0,8 Sr 0,2 MnO 3 fue determinada mediante microanálisis de rayos X por energía dispersiva (EDX), indicando una buena concordancia entre la composición propuesta y obtenida. Los valores de área superficial y volumen de poro medidos por el método BET permiten indicar que el material preserva sus características superficiales y texturales en función del método de síntesis utilizado.Palabras clave: Manganita, Perovskitas, SOFC. AbstractThis paper reports the synthesis and characterization of an oxide type La 0.8 Sr 0.2 MnO 3 , using a wet chemistry route, which allows to obtain a ceramic material with physicochemical properties and structural characteristics of relevant importance for application as an electrode component for use in solid oxide fuel cells devices (SOFC). The synthesized material was characterized by X-ray diffraction (XRD), obtaining a material with perovskite structure. Results from High-resolution transmission electron microscopy (HRTEM), confirm the synthesis of a solid with regular morphology preferentially oriented in the (1 1 2) plane, with d spacing calculated of about 0.25 nm based on the results of HRTEM and XRD. The La 0.8 Sr 0.2 MnO 3 composition was determined by X-ray microanalysis by energy dispersive (EDX), indicating a good agreement between the proposed and obtained composition. Surface area and pore volume measured by BET method would suggest that the material maintain their textural and surface characteristics depending on the synthesis method used.

show abstract

Preparation of LaMnO3 perovskite thin films by suspension plasma spraying for SOFC cathodes

Cited by 82 publications

References 10 publications

Chemical and electrical properties of LSM cathodes prepared by mechanosynthesis

Chemical and electrical properties of LSM cathodes prepared by mechanosynthesis

Producción y caracterización de láminas delgadas de LaMnO<sub>3</sub> preparadas por la técnica de Sol-Gel

Síntesis y caracterización del sistema La0,8Sr0,2MnO3

Contact Info

Product

Resources

About