Evolution of bulk and surface structures in stoichiometric LaAlO3 mixed oxide prepared by using starch as template

Stathopoulos, Vassilis N.; Кузнецова, Т. Г.; Lapina, Olga B.; Khabibulin, Dzhalil F.; Pandis, Pavlos K.; Krieger, Tamara; Chesalov, Yu. A.; Gulyalev, Roman; Krivensov, Vladimir; Ларина, Т. В.; Sadykov, Vladіslav

doi:10.1016/j.matchemphys.2017.12.056

Cited by 12 publications

(4 citation statements)

References 76 publications

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“…The most widely used technology for the preparation of LaAlO 3 and its doped derivatives is the pyrolysis of organic-nitrate compositions, known as the sol-gel [68,69,74] or autocombustion methods (or self-propagating high-temperature synthesis, and the Pechini method) [70][71][72][73]75]. Utilizing different fuels during the pyrolysis process coupled with various annealing temperatures affects the crystallinity, powder dispersity, and ceramics density, determining the functional properties of the obtained LaAlO 3 -based ceramic materials [74,76,77].…”

Section: Electrolyte Materials Based On Laalo 3 21 Synthesis Structur...mentioning

confidence: 99%

“…LaAlO 3 powders were prepared by Zhang et al [68] from La(NO 3 ) 3 •6H 2 O and Al(NO 3 ) 3 •9H 2 O: they were dissolved in 2-methoxyethanol and then mixed with citric acid at a molar ratio of 1:1 to the total content of metal ions. The obtained solutions were ramic materials [74,76,77].…”

Section: Electrolyte Materials Based On Laalo 3 21 Synthesis Structur...mentioning

confidence: 99%

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Recent Progress in the Design, Characterisation and Application of LaAlO3- and LaGaO3-Based Solid Oxide Fuel Cell Electrolytes

Филонова

Medvedev

2022

Nanomaterials

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Solid oxide fuel cells (SOFCs) are efficient electrochemical devices that allow for the direct conversion of fuels (their chemical energy) into electricity. Although conventional SOFCs based on YSZ electrolytes are widely used from laboratory to commercial scales, the development of alternative ion-conducting electrolytes is of great importance for improving SOFC performance at reduced operation temperatures. The review summarizes the basic information on two representative families of oxygen-conducting electrolytes: doped lanthanum aluminates (LaAlO3) and lanthanum gallates (LaGaO3). Their preparation features, chemical stability, thermal behaviour and transport properties are thoroughly analyzed in terms of their connection with the target functional parameters of related SOFCs. The data presented here will serve as a starting point for further studies of La-based perovskites, including in the fields of solid state ionics, electrochemistry and applied energy.

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Section: Electrolyte Materials Based On Laalo 3 21 Synthesis Structur...mentioning

confidence: 99%

Section: Electrolyte Materials Based On Laalo 3 21 Synthesis Structur...mentioning

confidence: 99%

Recent Progress in the Design, Characterisation and Application of LaAlO3- and LaGaO3-Based Solid Oxide Fuel Cell Electrolytes

Филонова

Medvedev

2022

Nanomaterials

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“…These materials present general formula ABX 3 and can accommodate a variety of elements in the crystal lattice without destroying the matrix structure, in which A positions are generally occupied by a rare earth metal or alkaline earth metal cation, B positions with small transition metal cations and X denotes oxygen anions. This structural diversity offers numerous advantages in terms of compounds with enhanced properties, such as thermal and chemical stability in large range of oxygen partial pressure, and ionic, protonic and electronic conductivity [1].…”

Section: Introductionmentioning

confidence: 99%

“…Among perovskite-type oxides, lanthanum aluminate (LaAlO 3 ) exhibit interesting electrical and electrocatalytic properties, with application in numerous fields, such as high frequency capacitors, substrate material for thin film high temperature superconductors, and electrolyte material for solid oxide fuel cells (SOFC) [1][2][3]6]. The properties of this material arise from substitution by different dopants either on the La or Al sites.…”

Section: Introductionmentioning

confidence: 99%

Effects of Sr and Mn co-doping on microstructural evolution and electrical properties of LaAlO3

Villas-Bôas

Goulart

Ferreira

2019

PAC

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In this work, we investigate the effects of Sr and Mn co-doping on the microstructural development and electrical properties of LaAlO 3 synthesised by solid state reaction and sintered at 1500 and 1600°C. The addition of Sr and Mn contributed to the crystallization and stabilization of the perovskite structure. However, the addition of Sr alone lead to the formation of heterogeneous microstructure, while the combined effect of Sr and Mn improved Al and La homogeneity in the perovskite structure. Total electrical conductivity is enhanced by three orders of magnitude with Sr addition (La 0.8 Sr 0.2 AlO 3-δ : 5.74 × 10 −4 S/cm at 600°C) and five orders of magnitude with Mn co-doping (La 0.8 Sr 0.2 Al 0.8 Mn 0.2 O 3-δ : 3.6 × 10 −2 S/cm at 600°C) compared to the undoped LaAlO 3 (2.96 × 10 −6 S/cm at 600°C). The Sr and Mn co-doped LaAlO 3 present favourable catalytic activity for electrode reactions even with a low dopant concentration (20 mol%).

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A New Ag/AgBr/LaAlO3 Plasmonic Composite: Synthesis, Characterization, and Visible-Light Driven Photocatalytic Activity

Venkataswamy

Sudheera²,

Vaishnavi

et al. 2020

Journal of Elec Materi

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Evolution of bulk and surface structures in stoichiometric LaAlO3 mixed oxide prepared by using starch as template

Cited by 12 publications

References 76 publications

Recent Progress in the Design, Characterisation and Application of LaAlO3- and LaGaO3-Based Solid Oxide Fuel Cell Electrolytes

Recent Progress in the Design, Characterisation and Application of LaAlO3- and LaGaO3-Based Solid Oxide Fuel Cell Electrolytes

Effects of Sr and Mn co-doping on microstructural evolution and electrical properties of LaAlO3

A New Ag/AgBr/LaAlO3 Plasmonic Composite: Synthesis, Characterization, and Visible-Light Driven Photocatalytic Activity

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