Effect of casting slurry composition on anode support microstructure and cell performance of MT-SOFCs by phase inversion method

Ren, Cong; Liu, Tong; Mao, Yating; Maturavongsadit, Panita; Luckanagul, Jittima Amie; Wang, Qian; Chen, Fanglin

doi:10.1016/j.electacta.2014.10.060

Cited by 25 publications

(7 citation statements)

References 30 publications

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“…These results are not similar to the previous report. Ren et al 33 . have indicated that the formation of finger‐like pores is inhibited in the samples fabricated using high PESf concentration in the slurry.…”

Section: Resultsmentioning

confidence: 99%

Atmospheric plasma spraying to fabricate metal‐supported solid oxide fuel cells with open‐channel porous metal support

Lin

Wang

et al. 2022

J Am Ceram Soc.

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Metal‐supported solid oxide fuel cells (MS‐SOFCs) have been fabricated by applying phase‐inversion tape‐casting and atmospheric plasma spraying (APS). The effect of the binder amount of the phase‐inversion slurries on the microstructure development of the 430L stainless steel metal support was investigated. The pore structures, the viscosity of the slurry, porosity and permeability of the as‐prepared metal supports are significantly influenced by the amount of the binder. NiO–scandia‐stabilized zirconia (ScSZ) anode, ScSZ electrolyte and La0.6Sr0.4Co0.2Fe0.8O3−δ (LSCF) cathode layers were consecutively deposited on the metal support with an ideal microstructure by APS process. The effect of plasma power of the APS on the microstructure of the electrolyte and cathode was investigated. A dense electrolyte layer and a porous cathode layer were successfully obtained at 40 and 6 kW of the APS plasma power, respectively. MS‐SOFCs, with a cell configuration of 430L/Ni‐ScSZ/ScSZ/LSCF, achieved a maximum cell power density of 1079 mW cm−2 at 700°C using humidified H2 as fuel and ambient air as oxidant. The corresponding ohmic resistance and total resistance of MS‐SOFCs was 0.14 and 0.32 Ω cm2, respectively. This work demonstrates the feasibility of fabricating high‐performance MS‐SOFCs with economical and scalable techniques.

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Section: Resultsmentioning

confidence: 99%

Atmospheric plasma spraying to fabricate metal‐supported solid oxide fuel cells with open‐channel porous metal support

Lin

Wang

et al. 2022

J Am Ceram Soc.

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“…The deviations from Nernst potential are 0.185 V at 750 °C and 0.152 V at 600 °C, probably due to the electron conduction through the electrolyte layer and/or imperfect seals between the electrodes . The OCV values of the 12 μm BZCYYb‐based cell are close to the values of anode‐supported MT‐SOFCs fabricated via phase‐inversion technique, indicating that the electron conduction through the BZCYYb electrolyte layer are insignificant , , , .…”

Section: Resultsmentioning

confidence: 99%

Enhancement of Electrochemical Properties, Impedance and Resistances of Micro‐tubular IT‐SOFCs with Novel Asymmetric Structure Based on BaZr_0.1Ce_0.7Y_0.1Yb_0.1O₃₋_δ Proton Conducting Electrolyte

et al. 2019

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Anode‐supported micro‐tubular SOFCs based on a proton and oxide ion mixed conductor electrolyte, BaZr0.1Ce0.7Y0.1Yb0.1O3−δ (BZCYYb), have been successfully fabricated via phase‐inversion process. Typical micro‐tubular cell with the configuration of Ni‐BZCYYb|BZCYYb|La0.6Sr0.4Co0.2Fe0.8O3–δ, consists of anode support, electrolyte and cathode with thicknesses of 200, 12, and 10 μm, respectively. The cells show excellent electrochemical performance with the peak power densities of 1.040, 0.902, 0.721, and 0.590 W cm−2 at 750, 700, 650, and 600 °C, respectively, with humidified (3 vol.% H2O) hydrogen as fuel and ambient air as oxidant. The AC impedance spectroscopy result shows low concentration polarization values of 0.016–0.021 Ω cm2 at 750–600 °C. Further, significant performance enhancement is observed during long‐term stability test at 600 and 750 °C under constant voltage of 0.5 and 0.7 V over 120 h, respectively, indicating excellent stability of BZCYYb under fuel cell operating condition. The high performance is attributed to high‐quality cell, validated by the dense, crack‐free BZCYYb electrolyte film supported by the anode with micro sponge‐like pores.

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“…32) Finally, Ren et al investigated the effect of slurry composition on the cell performance, but did not examine possible preparation methods and their conditions. 33) It is well known that PEFC performance depends on the electrode microstructure. For this reason, cell performance can be controlled by varying the particle dispersion state, amount of ionomer adsorbed by the slurry powder, and slurry packing ability.…”

Section: Introductionmentioning

confidence: 99%

Preparation procedure for the electrode slurries of polymer electrolyte fuel cells utilizing the irreversibility of ionomer adsorption onto Pt–C particles

Kishi

Tanaka

Mori

2019

J. Ceram. Soc. Japan

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The effect of slurry preparation for polymer electrolyte fuel cells on the electrode performance has been investigated in this work. The amount of ionomer adsorbed onto PtC powder increases when water is used as a solvent; however, the size of non-adsorbed ionomer particles increases as well, resulting in a larger gas permeation resistance. Meanwhile, increasing the ethanol-to-water mass ratio in a mixed solvent decreases the ionomer size. Therefore, an improved two-step slurry preparation procedure utilizing the irreversibility of the ionomer adsorption onto PtC powder has been investigated. In this method, (1) PtC powder is mixed with ionomer in water to maximize its adsorbed fraction, after which (2) ethanol is added to the prepared slurry to minimize the size of non-adsorbed ionomer. As compared with the conventional one-step synthesis method, the developed twostep preparation procedure enhances the electrode performance without changing its composition.

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Effect of casting slurry composition on anode support microstructure and cell performance of MT-SOFCs by phase inversion method

Cited by 25 publications

References 30 publications

Atmospheric plasma spraying to fabricate metal‐supported solid oxide fuel cells with open‐channel porous metal support

Atmospheric plasma spraying to fabricate metal‐supported solid oxide fuel cells with open‐channel porous metal support

Enhancement of Electrochemical Properties, Impedance and Resistances of Micro‐tubular IT‐SOFCs with Novel Asymmetric Structure Based on BaZr_0.1Ce_0.7Y_0.1Yb_0.1O₃₋_δ Proton Conducting Electrolyte

Preparation procedure for the electrode slurries of polymer electrolyte fuel cells utilizing the irreversibility of ionomer adsorption onto Pt–C particles

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Effect of casting slurry composition on anode support microstructure and cell performance of MT-SOFCs by phase inversion method

Cited by 25 publications

References 30 publications

Atmospheric plasma spraying to fabricate metal‐supported solid oxide fuel cells with open‐channel porous metal support

Atmospheric plasma spraying to fabricate metal‐supported solid oxide fuel cells with open‐channel porous metal support

Enhancement of Electrochemical Properties, Impedance and Resistances of Micro‐tubular IT‐SOFCs with Novel Asymmetric Structure Based on BaZr0.1Ce0.7Y0.1Yb0.1O3−δ Proton Conducting Electrolyte

Preparation procedure for the electrode slurries of polymer electrolyte fuel cells utilizing the irreversibility of ionomer adsorption onto Pt–C particles

Contact Info

Product

Resources

About

Enhancement of Electrochemical Properties, Impedance and Resistances of Micro‐tubular IT‐SOFCs with Novel Asymmetric Structure Based on BaZr_0.1Ce_0.7Y_0.1Yb_0.1O₃₋_δ Proton Conducting Electrolyte