2015
DOI: 10.1016/j.elecom.2015.09.020
|View full text |Cite
|
Sign up to set email alerts
|

A cobalt-free electrode material La0.5Sr0.5Fe0.8Cu0.2O3−δ for symmetrical solid oxide fuel cells

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
2
1
1
1

Citation Types

2
30
2

Year Published

2018
2018
2023
2023

Publication Types

Select...
5

Relationship

0
5

Authors

Journals

citations
Cited by 57 publications
(34 citation statements)
references
References 33 publications
2
30
2
Order By: Relevance
“…These TEC values, especially at the high temperatures, are far beyond TECs, (11-13) 10 À6 8C À1 ,o ft he commonlyu sed electrolyte materials in IT-SOFC, [11][12][13] which is disadvantageous for structure and performance stability of the SOFCs.I nc ontrast, LFCuO showeda na lmost linear expansion curve similar to other Fe-Cu-based perovskite oxides, [28][29][30] giving rise to am uch smaller TEC value of 12.0 10 À6 8C À1 at 25-900 8C. ThisT EC value is remarkably smallc ompared to the TECs (> 20 10 À6 8C À1 )o fc obalt-based perovskite oxides; [7,31] and it is even smaller than the TEC results of Fe-Cu-based perovskite oxidess uch as La 0.5 Sr 0.5 Fe 0.8 Cu 0.2 O 3Àd (17.7 10 À6 8C À1 at 25-900 8C), [28] Nd 0.5 Sr 0.5 Fe 0.8 Cu 0.2 O 3Àd (14.7 10 À6 8C À1 at 25-800 8C), [32] With the exception of the excellent TEC matching of LFCuO with electrolytes from an application point of view,t he exact reasonsf or the dramatically different TEC values between LFCuO and BFCuO are also intriguinga nd worthy of furtheri nvestigation.Itisk nownthat two factors are related to the thermal expansion behaviors of the perovskite oxides:one is "chemical expansion" induced by reduction and spin transition of the B-site ions and the other is "crystal expansion" from anharmonic atomic vibrations that dependo ne lectrostatic attraction forces within the lattice. [27,34,35] Co-based perovskite oxides usually show large TECv alues above 20 10 À6 8C À1 , mainly owing to the "chemical expansion" induced by the easily reduced Co n + (n = 4,3) ions at high temperatures as well as the low-to-high spin transition of Co 3 + .…”
Section: Thermal Expansion Behaviorsmentioning
confidence: 67%
See 2 more Smart Citations
“…These TEC values, especially at the high temperatures, are far beyond TECs, (11-13) 10 À6 8C À1 ,o ft he commonlyu sed electrolyte materials in IT-SOFC, [11][12][13] which is disadvantageous for structure and performance stability of the SOFCs.I nc ontrast, LFCuO showeda na lmost linear expansion curve similar to other Fe-Cu-based perovskite oxides, [28][29][30] giving rise to am uch smaller TEC value of 12.0 10 À6 8C À1 at 25-900 8C. ThisT EC value is remarkably smallc ompared to the TECs (> 20 10 À6 8C À1 )o fc obalt-based perovskite oxides; [7,31] and it is even smaller than the TEC results of Fe-Cu-based perovskite oxidess uch as La 0.5 Sr 0.5 Fe 0.8 Cu 0.2 O 3Àd (17.7 10 À6 8C À1 at 25-900 8C), [28] Nd 0.5 Sr 0.5 Fe 0.8 Cu 0.2 O 3Àd (14.7 10 À6 8C À1 at 25-800 8C), [32] With the exception of the excellent TEC matching of LFCuO with electrolytes from an application point of view,t he exact reasonsf or the dramatically different TEC values between LFCuO and BFCuO are also intriguinga nd worthy of furtheri nvestigation.Itisk nownthat two factors are related to the thermal expansion behaviors of the perovskite oxides:one is "chemical expansion" induced by reduction and spin transition of the B-site ions and the other is "crystal expansion" from anharmonic atomic vibrations that dependo ne lectrostatic attraction forces within the lattice. [27,34,35] Co-based perovskite oxides usually show large TECv alues above 20 10 À6 8C À1 , mainly owing to the "chemical expansion" induced by the easily reduced Co n + (n = 4,3) ions at high temperatures as well as the low-to-high spin transition of Co 3 + .…”
Section: Thermal Expansion Behaviorsmentioning
confidence: 67%
“…These TEC values, especially at the high temperatures, are far beyond TECs, (11–13)×10 −6 °C −1 , of the commonly used electrolyte materials in IT‐SOFC, which is disadvantageous for structure and performance stability of the SOFCs. In contrast, LFCuO showed an almost linear expansion curve similar to other Fe–Cu‐based perovskite oxides, giving rise to a much smaller TEC value of 12.0×10 −6 °C −1 at 25–900 °C. This TEC value is remarkably small compared to the TECs (>20×10 −6 °C −1 ) of cobalt‐based perovskite oxides; and it is even smaller than the TEC results of Fe–Cu‐based perovskite oxides such as La 0.5 Sr 0.5 Fe 0.8 Cu 0.2 O 3− δ (17.7×10 −6 °C −1 at 25–900 °C), Nd 0.5 Sr 0.5 Fe 0.8 Cu 0.2 O 3− δ (14.7×10 −6 °C −1 at 25–800 °C), and Ln 0.5 Sr 0.5 Fe 0.8 Cu 0.2 O 3− δ (Ln=La, Pr and Nd, TEC≈16×10 −6 °C −1 at 30–850 °C) .…”
Section: Resultsmentioning
confidence: 84%
See 1 more Smart Citation
“…Table presents several single cell performances with different cobalt‐free cathode compositions . Yttria‐stabilized zirconia (YSZ), Sm 0.2 Ce 0.8 O 1.9 , La 0.8 Sr 0.2 Ga 0.83 Mg 0.17 O 3−δ , BaZr 0.1 Ce 0.7 Y 0.2 O 3−δ , and BaZr 0.1 Ce 0.7 Y 0.1 Yb 0.1 O 3−δ are typically adopted as electrolytes while Ni‐based cermet (Ni and electrolyte composite) as anodes.…”
Section: Discussionmentioning
confidence: 99%
“…[25,26] To obtain this structure at low temperatures, a recently proposed method is to reduce the perovskite derivatives at temperatures near 800 C, resulting in the formation of the Ruddlesden-Popper structure along with in situ grown metallic-phase nanoparticles. [15,17,[27][28][29][30] This strategy ensures that particle growth of the Ruddlesden-Popper support, which leads to a decrease in reaction sites, is suppressed due to the relatively low preparation temperature. It has been previously reported that the Ruddlesden-Popper material of La gas mixture at 800 C, whose condition is much milder than the typical synthesis method of Ruddlesden-Popper materials.…”
Section: Introductionmentioning
confidence: 99%