Surface modification of anode substrate via nano-powder slurry spin coating for the thin film electrolyte of solid oxide fuel cell

Kim, Jong Cheol; Lee, Dok Yol; Kim, Hae-Ryoung; Lee, Hae-Weon; Lee, Jong-Ho; Son, Ji‐Won

doi:10.1016/j.tsf.2010.11.044

Cited by 12 publications

(8 citation statements)

References 23 publications

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“…40. h l c /h t c increases with increasing D m =D eff O2ÀN2 for electrolytes with all thicknesses. According to eqn (28), (29) and (31), h l c is independent of i. For instance, h l c and h l c /h t c increase from 0 to 1.08 mV and 60%, respectively, with increasing D m =D eff O2ÀN2 from 0 to 0.1% when L m is 100 nm.…”

Section: Cp Of Sofcs With No Reaction Between Leaked H 2 and O 2 (X ¼ 0)mentioning

confidence: 94%

“…12 As shown in Fig. 19 Kerman et al fabricated SOFC devices with YSZ/Gd doped CeO 2 (CGO) of 85 nm by a co-sputtering method, achieving a peak power density of 1175 mW cm À2 at 520 C. 20 Other methods such as atomic layer deposition, 21,22 plasma enhanced atomic layer deposition, 23 pulsed laser deposition, [24][25][26] sputter deposition, 27 and nano-powder slurry spin coating (NSC) 28 have also been developed to fabricate mSOFCs. [15][16][17][18] Extensive methods have been developed to fabricate mSOFCs.…”

Section: Introductionmentioning

confidence: 99%

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Gas leak diffusion induced polarization in submicro/nanoscale non-tight electrolytes of solid oxide fuel cells

Niu

Zhou

et al. 2016

RSC Adv.

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Solid oxide fuel cells with submicro/nanoscale electrolytes (mSOFCs) are attracting increasing attention since the ohmic energy loss arising from an ion-resistive electrolyte decreases significantly with decreasing thickness of the electrolyte interlayers. However, gas leak diffusion can be induced due to increasing microstructural flaws such as cracks and pinholes in thin electrolytes. Evaluation of the effects of gas leak diffusion through electrolyte on cell performance is thus an urgent demand. In this work, the effect of gas leak diffusion on concentration polarizations (CPs) is investigated quantitatively for both anodes and cathodes of SOFCs under various operating conditions. The results show that gas leak diffusion through electrolyte typically induces dominant cathode CP. The direct reaction of leaked H 2 and O 2 correlates has a large impact on both anode and cathode CP induced by gas leak diffusion.Lowering the operating temperature decreases CP induced by gas leak diffusion. Our work provides a quantitative model to evaluate the impact of gas leak diffusion in electrolytes on SOFC performance and facilitates the rational design of high performance mSOFCs.

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Section: Cp Of Sofcs With No Reaction Between Leaked H 2 and O 2 (X ¼ 0)mentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

Gas leak diffusion induced polarization in submicro/nanoscale non-tight electrolytes of solid oxide fuel cells

Niu

Zhou

et al. 2016

RSC Adv.

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“…The GDC-based IT-SOFCs were fabricated by spin coating and screen printing. − GDC powder and ethyl cellulose (4 wt % of GDC powder) with a proper amount of terpineol were ball-milled for 12 h. The GDC electrolyte slurry was dropped on the NiO–GDC anode supports and spun at 3000 rpm for 30 s; then, the half-cells were dried at 80 °C. We performed three cycles of spin coating, and the half-cells were fully sintered at 1500 °C for 3 h to fabricate a dense and stable GDC electrolyte.…”

Section: Methodsmentioning

confidence: 99%

Electrospun Core–Shell Fibers for High-Efficient Composite Cathode-Based Solid Oxide Fuel Cells

Yang

Wang

et al. 2021

Energy Fuels

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Fibrous perovskite oxide has been the most promising cathode for intermediate-temperature solid oxide fuel cells (IT-SOFCs) due to its efficient mass and charge transfer. Herein, a core−shell fiber-structured YCo 0.5 Fe 0.5 O 3 (YCF)− Gd 0.1 Ce 0.9 O 1.95 (GDC) cathode is synthesized via the modified electrospinning technique. These unique YCF−GDC fibers exhibit a uniform diameter of 300 nm, and the GDC particles are attached to the YCF fiber cores. The electrochemical performance demonstrates a relatively low area-specific resistance of 0.66 Ω•cm 2 at 550 °C in air, which is much lower than 1.56 Ω•cm 2 of pure YCF fiber cathode. Moreover, the distribution of relaxation times (DRT) analysis results indicate that the introduction of GDC nanoparticles and the core−shell structure greatly facilitate oxygen-ion conduction and charge transfer processes, and the oxygen incorporation process plays a major role in the total polarization resistance. The NiO−GDC|GDC|fibrous YCF−GDC fuel cell shows a maximum power density of 426.5 mW•cm −2 at 550 °C. These results display that the core−shell fiber-structured YCF− GDC composite oxide is a promising candidate of highly active cathode for IT-SOFCs.

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“…However, the fabrication of reliable thin-film YSZ electrolytes is challenging. As reported in the literature, many techniques can be applied to prepare thin film YSZ electrolyte, such as electrochemical vapor deposition, chemical vapor deposition, pulsed laser deposition, [9][10][11] sputtering, 12 spin coating, 13,14 and screen printing. 15 Among them, screen printing is the most suitable one for scalable industrial fabrication because of its low cost and reproducibility.…”

Section: Introductionmentioning

confidence: 99%

Robust and reliable solid oxide fuel cells with modified thin film YSZ electrolyte

Cheng

Lyu

et al. 2023

Int J Applied Ceramic Tech

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Reduce electrolyte thickness can improve solid oxide fuel cell (SOFC) performance. However, thinner electrolyte often contains prominent defects and flaws, which may decrease the yield and increase operation risk. This work proposes a method to modify the thin film YSZ electrolyte, to improve cell reliability and durability. The as‐sintered anode supported half‐cell with screen printed YSZ electrolyte was immersed in precursor solution of Y(NO3)3·6H2O and Zr(NO3)4·5H2O, and being treated under hydrothermal condition of 150°C for 12 h. As a result, the modified cells show slight increase in the OCV values. Furthermore, the hydrothermal modification effectively promotes interface sintering between YSZ electrolyte and GDC barrier layer, yielding a smaller ohmic resistance of .142 Ω·cm2 (a decrease of ∼11%) and a higher peak power density of .964 W/cm2 (an increase of ∼18%) at 750°C, than pristine cell. Moreover, the modified cell operates stably over 300 h, while the pristine cell presents large and irregular voltage fluctuations. This work suggests that the hydrothermal modification is an effective and promisingly industrial applicable method for thin film electrolyte recovery in SOFCs.

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Surface modification of anode substrate via nano-powder slurry spin coating for the thin film electrolyte of solid oxide fuel cell

Cited by 12 publications

References 23 publications

Gas leak diffusion induced polarization in submicro/nanoscale non-tight electrolytes of solid oxide fuel cells

Gas leak diffusion induced polarization in submicro/nanoscale non-tight electrolytes of solid oxide fuel cells

Electrospun Core–Shell Fibers for High-Efficient Composite Cathode-Based Solid Oxide Fuel Cells

Robust and reliable solid oxide fuel cells with modified thin film YSZ electrolyte

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