Mixed electronic-oxide ionic conductor of BaCoO3 doped with La for cathode of intermediate-temperature-operating solid oxide fuel cell

Ishihara, Takeshi; Fukui, Satoko; Nishiguchi, Hiroyasu; Takita, Yusaku

doi:10.1016/s0167-2738(02)00394-6

Cited by 63 publications

(44 citation statements)

References 11 publications

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“…Recently, we have found that x ¼ 0.6 [23] is the limit of stability for the cubic perovskite phase of the La 1Àx Ba x CoO 3Àd system, in air, which concurs with the composition reported by Ishihara et al [2,3] with the minimum overpotential. Therefore, in this study we have synthesized and then evaluated the cathode performance of the cubic perovskite phase La 0.4 Ba 0.6 CoO 3Àd by impedance spectroscopy measurements using Ce 0.9 Gd 0.1 O 1.95 as electrolyte and three different configurations for the electrode of the symmetrical cells.…”

Section: Introductionsupporting

confidence: 90%

“…The authors have reported Rp values of 0.16 and 0.26 Ucm 2 for La 0.5 Ba 0.5 CoO 3Àd and the composite La 0.5 Ba 0.5 CoO 3Àd eSDC, respectively [6,8]. Ishihara et al [2,3] have studied the influence of the Ba content on the cathode performance for the La 1Àx Ba x CoO 3Àd system (0 x 1) using LSGM as electrolyte. The authors obtained the minimum cathode overpotential at T ¼ 600 C for the x ¼ 0.6 composition.…”

Section: Introductionmentioning

confidence: 99%

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Optimum cathode configuration for IT-SOFC using La0.4Ba0.6CoO3−δ and Ce0.9Gd0.1O1.95

Setevich

Mogni

Caneiro

et al. 2012

International Journal of Hydrogen Energy

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Section: Introductionsupporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Optimum cathode configuration for IT-SOFC using La0.4Ba0.6CoO3−δ and Ce0.9Gd0.1O1.95

Setevich

Mogni

Caneiro

et al. 2012

International Journal of Hydrogen Energy

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“…Analogously to ferrite-based systems, these phenomena are all affected by the cobaltites thermodynamic properties correlating with the tolerance factors and A-site cation radii, and also by the materials microstructure. As a consequence, whilst the positive impact of Ba 2 þ doping on oxygen reduction kinetics was established by numerous research groups [24,184,[189][190][191][192], data on the ionic transport in (Ba,Sr) (Co,Fe)O 3Àd perovskites are quite contradictory (see Refs. [193][194][195][196] and references therein).…”

Section: Perovskite-related Mixed Conductors: a Short Overviewmentioning

confidence: 99%

Oxygen Ion‐Conducting Materials

Хартон

Marques

Kilner

et al. 2009

Solid State Electrochemistry I

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Oxygen ionic and mixed ionic-electronic conductors find important applications in solid-state electrochemical devices, including sensors, solid oxide fuel cells, hightemperature electrolyzers, and oxygen separation membranes. This chapter presents a brief overview of oxide phases with high diffusivity of O 2À anions, providing an introduction to this fascinating topic. Particular emphasis is centered on the comparative analysis of ionic and electronic conductivity variations in the major groups of solid oxide electrolytes and mixed conductors, such as perovskite-and fluorite-related compounds, apatite-type silicates, and derivatives of g-Bi 4 V 2 O 11 and b-La 2 Mo 2 O 9 . The defect chemistry mechanisms relevant to the oxygen ion migration processes are briefly discussed. IntroductionTechnologies based on the use of high-temperature electrochemical cells with oxygen anion-or mixed-conducting ceramics provide important advantages with respect to the conventional industrial processes [1][2][3][4][5][6][7][8]. In particular, solid oxide fuel cells (SOFCs) are considered as alternative electric power generation systems due to high energy-conversion efficiency, fuel flexibility, and environmental safety [1][2][3]. Dense ceramic membranes with mixed oxygen-ionic and electronic conductivity have an infinite theoretical separation factor with respect to oxygen, and can be used for gas separation and the partial oxidation of light hydrocarbons [4,5,7,8] (these and other applications are reviewed in Chapters 12 and 13). For all types of electrochemical cells, the key properties which determine the use of a material are the partial ionic and electronic conductivities. As an example, solid electrolytes for SOFCs, oxygen pumps and electrochemical sensors should exhibit a maximum oxygen ionic conductivity, while the electronic transport should be minimal. In contrast, for SOFC electrodes Solid State Electrochemistry I: Fundamentals, Materials and their Applications. Edited by Vladislav V. Kharton

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“…These membranes have been widely studied for the applications in oxygen separation [1], solid oxide fuel cells [2] and the field of chemical processing including partial oxidation of methane to syngas [3,4], pollutant (e.g. CO 2 ) reduction [5], selective oxidation of hydrocarbons [6], and so on.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Ba fully occupied A-site BaCo0.7Fe0.3−xNbxO3−δ perovskite stabilized by low concentration of Nb for oxygen permeation membrane

Cheng

Zhao

Teng

et al. 2008

Journal of Membrane Science

141

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Mixed electronic-oxide ionic conductor of BaCoO3 doped with La for cathode of intermediate-temperature-operating solid oxide fuel cell

Cited by 63 publications

References 11 publications

Optimum cathode configuration for IT-SOFC using La0.4Ba0.6CoO3−δ and Ce0.9Gd0.1O1.95

Optimum cathode configuration for IT-SOFC using La0.4Ba0.6CoO3−δ and Ce0.9Gd0.1O1.95

Oxygen Ion‐Conducting Materials

Investigation of Ba fully occupied A-site BaCo0.7Fe0.3−xNbxO3−δ perovskite stabilized by low concentration of Nb for oxygen permeation membrane

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