Electrochemical study on Ce0.85Sm0.15O1.925–BaCe0.83Y0.17O3− composite electrolyte

Wang, Haopeng; Zhang, Lijun; Liu, Xiaomei; Bi, Hailin; Yu, Shenglong; Han, Fei; Li, Pei

doi:10.1016/j.jallcom.2015.01.135

Cited by 37 publications

(2 citation statements)

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“…However, the open-circuit voltage (OCV) was only 0.77 V. 23 Wang et al synthesized Ce 0.85 Sm 0.15 O 1.925 -BaCe 0.83 Y 0.17 O 3−δ (SDC-BCY) and an MPD of 298 mW/cm 2 was obtained at 700 °C. 24 In contrast, the MPDs of the state-of-the-art pure protonconducting SOFCs have exceeded 1 W/cm 2 at 600 °C, 25 while the simple oxygen ion-conducting cells are even much higher than proton-conducting cells. 26 It can be found very clearly from these literature studies that the power output of the dual-ion-conducting SOFCs lags farther behind the PCFCs and OCFCs, making the research about the intrinsic ionic transport behaviors, which is an urgent issue since the ionic transport ability is crucial to the final cell performances.…”

Section: Introductionmentioning

confidence: 99%

“…However, the open-circuit voltage (OCV) was only 0.77 V . Wang et al synthesized Ce 0.85 Sm 0.15 O 1.925 -BaCe 0.83 Y 0.17 O 3−δ (SDC-BCY) and an MPD of 298 mW/cm 2 was obtained at 700 °C . In contrast, the MPDs of the state-of-the-art pure proton-conducting SOFCs have exceeded 1 W/cm 2 at 600 °C, while the simple oxygen ion-conducting cells are even much higher than proton-conducting cells .…”

Section: Introductionmentioning

confidence: 99%

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Metal Ion Migration: A New Insight into the H⁺/O^2– Dual-Ion Transport in Perovskite–Fluorite Composites

Huang

Cao

et al. 2022

ACS Appl. Energy Mater.

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Ionic conduction (H+ and O2–) in composites composed of perovskite- and fluorite-type oxides remains an outstanding issue in the research of dual-ion-conducting electrolyte materials for solid oxide fuel cells (SOFCs). In this work, perovskite–fluorite composite ceramic pellets are fabricated, and the ionic conduction in the composites is comprehensively analyzed according to the electrochemical impedance spectra under different atmospheres. The results demonstrate that the grain boundary resistance aroused by ionic diffusion resistance across the interfaces is the dominant part in the impedance spectra of the hybrid. Additionally, composites consisting of perovskite oxides with different A-site cation ratios are synthesized and tested. Strong Ba ion migration is observed with high relevance for the interpretation of the increased grain boundary resistances. Transmission electron microscopy (TEM) results indicate that the in situ reaction occurs at the perovskite/fluorite interface depending on the Ba ratio in the perovskites, which plays an important role in the internal H+ and O2– transport across the interfaces.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Metal Ion Migration: A New Insight into the H⁺/O^2– Dual-Ion Transport in Perovskite–Fluorite Composites

Huang

Cao

et al. 2022

ACS Appl. Energy Mater.

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Structure, chemical stability and electrical properties of BaCe0.9Y0.1O3−δ modified with V2O5

Łącz

2019

J Therm Anal Calorim

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Wet vacuum impregnation method was applied in order to evaluate the possibility of the formation of the material in BaCe 0.9 Y 0.1 O 3-d -V 2 O 5 system. Single-phase BaCe 0.9 Y 0.1 O 3-d samples, synthesised by solid-state reaction method, were impregnated with the solution of vanadium(V) oxide precursor. Multi-step, multi-cycle impregnation procedure was applied to enhance the impregnation efficiency. Partial decomposition of Y-doped BaCeO 3 in contact with the solution of the precursor, resulting in the formation of vanadium containing phases (CeVO 4 and BaV 2 O 6 ) on the materials surface, was observed. However, the presence of vanadium was also confirmed for the inner parts of the materials. The synthesised materials were submitted for exposition test to evaluate their chemical stability towards CO 2 /H 2 O. All BaCe 0.9 Y 0.1 O 3based materials modified by impregnation revealed higher chemical stability in comparison with single-phase un-modified BaCe 0.9 Y 0.1 O 3-d , since the amount of barium carbonate formed during the exposition was significantly lower. The total electrical conductivity of the received multi-phase materials was generally slightly lower than for the reference BaCe 0.9 Y 0.1 O 3-d sample, since the presence of the additional phases had a blocking effect on materials conductivity. The values of BaCeO 3 lattice parameters and the Seebeck coefficient did not show the modification of the defects structure of Y-doped BaCeO 3 during applied synthesis procedure.

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Fabrication and characterization of SSZ tape cast electrolyte-supported solid oxide fuel cells

Jin

Rooney

Zhang

et al. 2016

Ceramics International

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Electrochemical study on Ce0.85Sm0.15O1.925–BaCe0.83Y0.17O3− composite electrolyte

Cited by 37 publications

References 28 publications

Metal Ion Migration: A New Insight into the H⁺/O^2– Dual-Ion Transport in Perovskite–Fluorite Composites

Metal Ion Migration: A New Insight into the H⁺/O^2– Dual-Ion Transport in Perovskite–Fluorite Composites

Structure, chemical stability and electrical properties of BaCe0.9Y0.1O3−δ modified with V2O5

Fabrication and characterization of SSZ tape cast electrolyte-supported solid oxide fuel cells

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Electrochemical study on Ce0.85Sm0.15O1.925–BaCe0.83Y0.17O3− composite electrolyte

Cited by 37 publications

References 28 publications

Metal Ion Migration: A New Insight into the H+/O2– Dual-Ion Transport in Perovskite–Fluorite Composites

Metal Ion Migration: A New Insight into the H+/O2– Dual-Ion Transport in Perovskite–Fluorite Composites

Structure, chemical stability and electrical properties of BaCe0.9Y0.1O3−δ modified with V2O5

Fabrication and characterization of SSZ tape cast electrolyte-supported solid oxide fuel cells

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Product

Resources

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Metal Ion Migration: A New Insight into the H⁺/O^2– Dual-Ion Transport in Perovskite–Fluorite Composites

Metal Ion Migration: A New Insight into the H⁺/O^2– Dual-Ion Transport in Perovskite–Fluorite Composites