Significant effects of sintering temperature on the performance of La0.6Sr0.4Co0.2Fe0.8O3−δ oxygen selective membranes

Zeng, Pingying; Ran, Ran; Chen, Zhihao; Gu, Hongxia; Shao, Zongping; Costa, João C. Diniz da; Liu, Shaomin

doi:10.1016/j.memsci.2007.06.047

Cited by 124 publications

(64 citation statements)

References 51 publications

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“…All the samples sintered at 1200 • C for 2 h were measured for the thermal expansion coefficient. They are comparable to the literature [34][35][36][37][38][39]. Fig.…”

Section: Materials Chacterization: Lscf-gdcsupporting

confidence: 90%

Thermal stress and probability of failure analyses of functionally graded solid oxide fuel cells

Anandakumar

Verma

et al. 2010

Journal of Power Sources

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“…All the samples sintered at 1200 • C for 2 h were measured for the thermal expansion coefficient. They are comparable to the literature [34][35][36][37][38][39]. Fig.…”

Section: Materials Chacterization: Lscf-gdcsupporting

confidence: 90%

Thermal stress and probability of failure analyses of functionally graded solid oxide fuel cells

Anandakumar

Verma

et al. 2010

Journal of Power Sources

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“…The GBL calculation was based on the SEM results given that the grain geometry is cubic in shape. The measurement of grain size and the calculation of GBL based on the hypothesis that grain geometry is cubic in shape were previously reported in the literature (Diethelm et al, 2005;Zhang et al, 1999;Zeng et al, 2007). The GBL was estimated from half of the perimeter of the grains per surface area.…”

Section: Methodsmentioning

confidence: 99%

“…They observed that increasing the grain size by increasing the sintering temperature resulted in a considerable decrease in the oxygen permeation flux. Again, La 0.6 Sr 0.4 Fe 0.9 Ga 0.1 O 3−δ was reported by Etchegoyen et al (2006) (Kharton et al, 2000;Kharton et al, 2001;Kharton et al, 2002;Arnold et al, 2008;Zeng et al, 2007;Shaula et al, 2005). Determining how microstructure influences the permeation fluxes of these mixed conducting ceramic membranes is complicated.…”

Section: Introductionmentioning

confidence: 97%

“…Recently, several studies were carried out by different groups to elucidate its importance and to address the dependence of the oxygen permeation on the microstructure (Diethelm et al, 2005;Zhang et al, 1999;Etchegoyen et al, 2006;Kim et al, 2000;Kharton et al, 2000;Kharton et al, 2001;Kharton et al, 2002;Arnold et al, 2008;Zeng et al, 2007;Shaula et al, 2005). Different perovskite systems were studied in many of these reports; however, no clear trend was visible relative to whether the transport along grain boundaries displays a barrier, or acts as a pathway for fast oxygen transport.…”

Section: Introductionmentioning

confidence: 99%

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EFFECTS OF SINTERING TEMPERATURE ON THE PERFORMANCE OF SrSc0.1Co0.9O3-δOXYGEN SEMIPERMEABLE MEMBRANE

Zeng

Wang

Falkenstein‐Smith

et al. 2015

Braz. J. Chem. Eng.

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-Our study investigates the influence of sintering temperature on the microstructure (grain size distribution, grain boundary length), electrical conductivity, and oxygen permeation properties of permeation membranes. For this purpose, SrSc 0.1 Co 0.9 O 3-δ samples with different microstructures were prepared by varying the sintering temperature from 1100 to 1250 °C. The average grain sizes were gradually increased, thus the grain boundary lengths decreased with increased sintering temperatures. The influence of the ceramic microstructure on total electrical conductivity was found to be negligible. The oxygen transport properties of the samples were characterized by permeation measurements as a function of temperature in an air/helium oxygen partial pressure gradient. The decrease of the sintering temperature, meaning a decrease of grain size and thus the increase of grain boundary length, leads to an enhanced oxygen permeation flux and a reduced activation energy. This implies that oxygen exchange and transport in the SrSc 0.1 Co 0.9 O 3-δ membranes occur more rapidly along grain boundaries than in the grain bulk.

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“…The membrane must be gastight to prevent unwanted gas leakage to the other side. The fabrication of planar membranes in earlier work usually involved simply pressing the powder into the desired shape ( Ref 6,9,14,[18][19][20][21] 25). However, all these techniques require a high-temperature sintering step at the end, which is a time consuming process that can take many hours to complete.…”

Section: Introductionmentioning

confidence: 99%

Deposition of Lanthanum Strontium Cobalt Ferrite (LSCF) Using Suspension Plasma Spraying for Oxygen Transport Membrane Applications

Fan

Kesler

2015

J Therm Spray Tech

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Suspension plasma spray deposition was utilized to fabricate dense lanthanum strontium cobalt ferrite oxygen separation membranes (OSMs) on porous metal substrates for mechanical support. The assprayed membranes had negligible and/or reversible material decomposition. At the longer stand-off distance (80 mm), smooth and dense membranes could be manufactured using a plasma with power below approximately 81 kW. Moreover, a membrane of 55 lm was observed to have very low gas leakage rates desirable for OSM applications. This thickness could potentially be decreased further to improve oxygen diffusion by using metal substrates with finer surface pores.

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Significant effects of sintering temperature on the performance of La0.6Sr0.4Co0.2Fe0.8O3−δ oxygen selective membranes

Cited by 124 publications

References 51 publications

Thermal stress and probability of failure analyses of functionally graded solid oxide fuel cells

Thermal stress and probability of failure analyses of functionally graded solid oxide fuel cells

EFFECTS OF SINTERING TEMPERATURE ON THE PERFORMANCE OF SrSc0.1Co0.9O3-δOXYGEN SEMIPERMEABLE MEMBRANE

Deposition of Lanthanum Strontium Cobalt Ferrite (LSCF) Using Suspension Plasma Spraying for Oxygen Transport Membrane Applications

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