Study of Sm0.2Ce0.8O1.9 (SDC) electrolyte prepared by a simple modified solid-state method

Yin, Shu; Li, Mengnan; Zeng, Yanwei; Li, Chuanming; Chen, Xiaowei; Ye, Zhupeng

doi:10.1016/s1002-0721(14)60138-1

Cited by 29 publications

(14 citation statements)

References 17 publications

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“…No other crystal structure e.g. typical to alkali carbonate was found, but the alkali carbonate could in theory be in an amorphous phase in the CSDC not revealed by the XRD, the same phenomenon was found in literature [13][14][15][16].…”

Section: Characterization Of Sdc Csdc and Washed Csdc Samplessupporting

confidence: 73%

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Effect of alkali carbonate in samarium-doped ceria electrolyte for a ceramic fuel cell

Jing¹

2016

NES

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Here we analyze the effects of alkali carbonate (Na 2 CO 3 and K 2 CO 3) in a low-temperature ceramic fuel cell. The electrolyte consists of a composite of samarium doped cerium (Ce 0.8 Sm 0.2 O 1.9) and carbonate. The alkali ions and CO 2 mixed with air as oxidant improved the power density and the open circuit voltage (OCV) of the fuel cell. The best results achieved showed a power density of 500 mW/cm 2 and an OCV of 1.2 V at 500 o C. The highest OCV observed was 1.4 V. The fuel cell exhibits both molten carbonate and low-temperature solid oxide fuel cell reactions.

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Section: Characterization Of Sdc Csdc and Washed Csdc Samplessupporting

confidence: 73%

“…It is hard to identify alkali carbonate from the SEM image, the same has happened in studies as well [13][14][15][16]. From Fig.…”

Section: Characterization Of Sdc Csdc and Washed Csdc Samplesmentioning

confidence: 99%

Effect of alkali carbonate in samarium-doped ceria electrolyte for a ceramic fuel cell

Jing¹

2016

NES

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“…The structure of the phase is also similar to a nearly cubic structure of LaFeO 3 in Fig. 3 (A) [29], indicating that the crystalline structure with the perovskite phase was formed on the SSFC cathode. This structure corresponded to the initial design in the perovskite phase for the SSFC cathode materials event the Cr element added on the B-side of the model system.…”

Section: Discussion Of Experimental Resultsmentioning

confidence: 53%

Development of cobalt-free oxide (Sm0.5Sr0.5Fe0.8Cr0.2O3-δ) cathode for intermediate-temperature solid oxide fuel cells (IT-SOFCs)

Susanto

Kamal

Ruswanto

et al. 2020

EEJET

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“…Note that the activation energies reported in various works as summarized in Table 2 were generated from either electrochemical impedance spectroscopy (EIS) or from J O2 , as indicated. Authors who reported activation energies based on EIS measurements based their calculations on either the total ionic resistance (for SDC 41,42,46 ) or the polarization resistance (for Ce 0.8 Sm 0.2 O 1.9 –La 0.4 Sr 0.6 Co 0.9 Sb 0.1 O 3− δ 38 ), which was calculated as the difference between the total and ohmic resistance. Authors who based their reported activation energies on the oxygen permeation fluxes or

J_{{normalO}_{2}}

took the same approach used in this work whereby the activation energies were generated from Arrhenius plots of the fluxes.…”

Section: Resultsmentioning

confidence: 99%

SDC‐SCFZ dual‐phase ceramics: Structure, electrical conductivity, thermal expansion, and O₂ permeability

Song

Zhang

et al. 2021

J. Am. Ceram. Soc.

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New CO2‐resistant dual‐phase Sm0.2Ce0.8O1.925–SrCo0.4Fe0.55Zr0.05O3‐δ (SDC‐SCFZ) ceramics present a promising outlook for potential future applications in membrane reactors and solid oxide fuel cells. Their high oxygen permeation flux and stability in CO2 sweep gas also allow their integration in oxyfuel combustion. Here the structural characteristics, electrical conductivities, thermal expansion behaviors, and oxygen permeabilities of four different SDC‐SCFZ membranes with weight ratios of 10:90, 25:75, 50:50, and 75:25 (SDC:SCFZ) are systematically studied. Among these four SDC‐SCFZ compositions, 0.6 mm‐thick 25 wt% SDC‐75 wt% SCFZ displayed the highest oxygen permeation fluxes that reach 1.26 mL min−1 cm−2 at 950°C and retained its phase integrity under alternating He and CO2 sweep gas over 72 hours of operation. This composite also showed a moderate thermal expansion coefficient of 1.90 × 10−5 K−1 between 30°C and 1000°C and an electrical conductivity of at least 16 S cm−1 at 550°C and above. Modeling studies revealed that the oxygen permeation fluxes through 25SDC‐75SCFZ are limited by surface exchange reactions from 700°C to 800°C and mixed bulk diffusion and surface exchange reactions above 800°C.

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Study of Sm0.2Ce0.8O1.9 (SDC) electrolyte prepared by a simple modified solid-state method

Cited by 29 publications

References 17 publications

Effect of alkali carbonate in samarium-doped ceria electrolyte for a ceramic fuel cell

Effect of alkali carbonate in samarium-doped ceria electrolyte for a ceramic fuel cell

Development of cobalt-free oxide (Sm0.5Sr0.5Fe0.8Cr0.2O3-δ) cathode for intermediate-temperature solid oxide fuel cells (IT-SOFCs)

SDC‐SCFZ dual‐phase ceramics: Structure, electrical conductivity, thermal expansion, and O₂ permeability

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Study of Sm0.2Ce0.8O1.9 (SDC) electrolyte prepared by a simple modified solid-state method

Cited by 29 publications

References 17 publications

Effect of alkali carbonate in samarium-doped ceria electrolyte for a ceramic fuel cell

Effect of alkali carbonate in samarium-doped ceria electrolyte for a ceramic fuel cell

Development of cobalt-free oxide (Sm0.5Sr0.5Fe0.8Cr0.2O3-δ) cathode for intermediate-temperature solid oxide fuel cells (IT-SOFCs)

SDC‐SCFZ dual‐phase ceramics: Structure, electrical conductivity, thermal expansion, and O2 permeability

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Product

Resources

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SDC‐SCFZ dual‐phase ceramics: Structure, electrical conductivity, thermal expansion, and O₂ permeability