Blocking layer for prevention of current leakage for reversible solid oxide fuel cells and electrolysis cells with ceria-based electrolyte

Sumi, Hiroyuki; Suda, Eisaku; Mori, M.

doi:10.1016/j.ijhydene.2016.09.176

Cited by 39 publications

(23 citation statements)

References 34 publications

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“…Another widely proposed approach for decreasing electron leakage in electrolytes presented in the literature consists in the formation of the so-called blocking layers. However, since this strategy has been thoroughly discussed in a number of research works 187–200 and reviews 42,43,201 it is considered to be beyond the scope of the present overview.…”

Section: Concluding Remarks and Further Prospectsmentioning

confidence: 99%

Electrochemistry and energy conversion features of protonic ceramic cells with mixed ionic-electronic electrolytes

Zvonareva

Medvedev

et al. 2022

Energy Environ. Sci.

138

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Section: Concluding Remarks and Further Prospectsmentioning

confidence: 99%

Electrochemistry and energy conversion features of protonic ceramic cells with mixed ionic-electronic electrolytes

Zvonareva

Medvedev

et al. 2022

Energy Environ. Sci.

138

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“…38) The OCV increased by inserting the BCY blocking layer between GDC electrolyte and Ni-GDC anode for ASCs. Authors also developed anodesupported microtubular SOFCs for low operating temperatures.…”

Section: )mentioning

confidence: 99%

Metal-supported microtubular solid oxide fuel cells with ceria-based electrolytes

Sumi

Shimada

Yamaguchi

et al. 2017

J. Ceram. Soc. Japan

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Metal-supported solid oxide fuel cells (SOFCs) are expected to lower operating temperature and improve reliability. The residual crushing strength and electrical conductivity of porous metallic nickel microtubes were higher than those of nickel-gadoliniadoped ceria (Ni-GDC) cermets. The maximum power density of the metal-supported microtubular SOFC with GDC electrolyte was approximately three times higher than that of a conventional anode-supported microtubular SOFC with yttria-stabilized zirconia electrolyte at a relatively low temperature of 550°C. The metal-supported microtubular SOFCs have a potential to be applied not only in stationary devices, such as residential combined heat/power systems, but also in portable power sources and vehicles.

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“…Except for typical oxide ionic conductors, doped BaCeO 3 including BaZr 0.1 Ce 0.7 Y 0.2 O 3-δ (BZCY) [14] and BaCe 0.8 Y 0.2 O 3-δ (BCY) [15], mixed proton-oxide ion conductors, have been demonstrated to block electronic conduction through doped ceria oxides (DCO) electrolyte membrane. However, the fabrication process of the bi-layered electrolytes is complicated and the long-term stability might be a problem on account of the difference of the thermal expansion coefficient (TEC) of the electrolytes, and the electrochemical performance is not competitive as compared with those typical doped-ceria-based cells due to the low oxygen-ionic conductivity of YSZ and doped BaCeO 3 .…”

Section: Introductionmentioning

confidence: 99%

Ce0.8Sm0.2O1.9 decorated with electron-blocking acceptor-doped BaCeO3 as electrolyte for low-temperature solid oxide fuel cells

Gong

Sun

Cao

et al. 2017

Electrochimica Acta

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A series of composites with nominal compositions of BaCe 0.8 Sm 0.2 O 3-δ (BCS)-Ce 0.8 Sm 0.2 O 1.9 (SDC) (20:80, 35:65, 50:50, 65:35 wt.%) are synthesized by a modified citric acid-nitrate sol-gel combustion method and evaluated as the electrolytes for low-temperature solid oxide fuel cells (SOFCs). The TEM results show that doped BaCeO 3 decorated SDC particles are formed after calcining at 1000 °C for 3 h. X-ray diffraction results reveal that the composites are only composed of BaCeO 3-based and SDC phases without any other impurity phases. Besides, BaCeO 3-based phase is uniformly distributed in the sintered electrolytes according to EDS element mapping. The open cell voltages (OCVs) of the single cells increase gradually with increasing the proportion of BaCeO 3-based phase, and are higher than those for bare SDC-based cells. Besides, the power performances of the cells are superior to SDC-based cells when BaCeO 3-based phase is lower than 35 wt.%. Electrochemical impedance spectroscopy analysis indicates that, in addition to blocking electronic current leakage, BaCeO 3-based phase would induce higher ohmic and polarization resistance, which is detrimental to power performance. Further specific effort should be focused on synthesizing uniform SDC@BCS core-shell electrolyte powders and minimizing the proportion of BCS phase towards high-performance SOFCs with high OCVs.

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Blocking layer for prevention of current leakage for reversible solid oxide fuel cells and electrolysis cells with ceria-based electrolyte

Cited by 39 publications

References 34 publications

Electrochemistry and energy conversion features of protonic ceramic cells with mixed ionic-electronic electrolytes

Electrochemistry and energy conversion features of protonic ceramic cells with mixed ionic-electronic electrolytes

Metal-supported microtubular solid oxide fuel cells with ceria-based electrolytes

Ce0.8Sm0.2O1.9 decorated with electron-blocking acceptor-doped BaCeO3 as electrolyte for low-temperature solid oxide fuel cells

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