Fabrication and performance of LaGaO3-Based tubular SOFC’s

Du, Yanhai; Sammes, Nigel M.

doi:10.1007/bf02376530

Cited by 2 publications

(1 citation statement)

References 14 publications

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“…Following the initial discovery by Ishihara et al, 1,2 numerous experimental studies have been carried out on the LaGaO 3 -based (LSGM) material, which include reports covering oxygen ion conductivity, [3][4][5][6][7][8][9][10][11][12][13] structural properties, 14-23 electrolyte performance within SOFCs [24][25][26][27] and the effect of transition-metal doping. [28][29][30][31][32][33][34][35][36] Such doping with multivalent transition-metal cations in order to introduce electronic conductivity is of interest for developing applications of mixed conductors (e.g.…”

Section: Introductionmentioning

confidence: 99%

Atomistic study of dopant site-selectivity and defect association in the lanthanum gallate perovskite

Islam

Davies

2004

J. Mater. Chem.

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Section: Introductionmentioning

confidence: 99%

Atomistic study of dopant site-selectivity and defect association in the lanthanum gallate perovskite

Islam

Davies

2004

J. Mater. Chem.

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Time Dependent Properties and Performance of a Tubular Solid Oxide Fuel Cell

Reifsnider

Huang

et al. 2004

Journal of Fuel Cell Science and Technology

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Time dependent properties and performance of tubular solid oxide fuel cells were studied numerically and experimentally. The numerical model incorporated local characteristics such as porosity, tortuosity, grain size, and conductivity and was used to evaluate the specific and relative changes in performance caused by the effect of time-dependent material changes of those characteristics. A 500 hour experimental study was conducted at 800°C in 97%H2∕3%H2O on an extruded LSCo-La0.6Sr0.4CoO3∕LSGM∕Ni electrolyte-supported tubular SOFC made in our laboratory. Changes in current density with time (at constant voltage) formed a curve with initial convex (upward) curvature, becoming monotonic decreasing. The microstructure of the constituent layers was examined by scanning electron microscopy. Comparisons between model predictions and experimental observations were made. For the situation modeled and tested, the porosity and ionic conductivity were found to be most influential on performance. More importantly, the effect of porosity is a trade-off between the influence on gas transport and the mixed conductor influence on the electrochemical reactions at the electrode.

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Fabrication and performance of LaGaO3-Based tubular SOFC’s

Abstract: Ce0.sSm0.2Oi. 9 interlayer and a Ni anode was 482 mW/cm 2. This paper will present the fabrication procedure and parameters, fuel cell performance test results, and the effect of electrode morphologies on the performance of the fuel cells.

Cited by 2 publications

References 14 publications

Atomistic study of dopant site-selectivity and defect association in the lanthanum gallate perovskite

Atomistic study of dopant site-selectivity and defect association in the lanthanum gallate perovskite

Time Dependent Properties and Performance of a Tubular Solid Oxide Fuel Cell

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