Electrochemical Properties of Tubular SOFC Based on a Porous Ceramic Support Fabricated by Phase-Inversion Method

Han, Zongying; Wang, Yuhao; Yang, Zhibin; Han, Min−Koo

doi:10.1016/j.jmst.2016.03.002

Cited by 28 publications

(5 citation statements)

References 29 publications

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“…Among various SOFC designs, planar and tubular are the most maturely developed types [5,6]. For the tubular configuration, the Micro-tubular SOFC (MT-SOFC) possesses great advantages over conventional tubular SOFC (T-SOFC) and planar SOFC (P-SOFC), such as higher power density, higher mass transfer efficiency, stronger mechanical property and lower thermal stress [7,8].…”

Section: Introductionmentioning

confidence: 99%

Residual stress analysis of a micro-tubular solid oxide fuel cell

Kong

Zhang

et al. 2016

International Journal of Hydrogen Energy

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Available online xxxKeywords: Micro-tubular solid oxide fuel cell (MT-SOFC) Residual stress Electrode thickness Failure probability a b s t r a c t A two-dimensional axisymmetric micro-tubular solid oxide fuel cell (MT-SOFC) model is developed to study the influence of component (anode, cathode or electrolyte) thickness onresidual stress at the room temperature. The results show that the anode is mainly subjected to tension stress while electrolyte and cathode are mostly exposed to compressive stress. However, the stress in a component can be reduced by increasing its thickness with other components unchanged. Then the Weibull analysis method is adopted to calculate the failure probability of the anode, it is found that the anode is prone to failure with a thinner anode or thicker cathode and electrolyte; the electrolyte thickness has a more significant effect on the anode failure probability than the cathode; and the component thickness must be coordinated in order to maximize the mechanical performance. The formula of the minimum anode thickness under the failure probability criterion 1E-6 is given, which brings considerable convenience to the design of MT-SOFC.

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Section: Introductionmentioning

confidence: 99%

Residual stress analysis of a micro-tubular solid oxide fuel cell

Kong

Zhang

et al. 2016

International Journal of Hydrogen Energy

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“…The cell fabrication process of the 3Y-TZP supported tubular SOFC is schematically illustrated in Figure a. The 3Y-TZP tubular support was prepared by the phase-inversion method described in our previous studies. − The phase-inversion slurry was prepared by mixing the 3Y-TZP and pore former powders by ball milling into a spinning solution consisting of polyethersulfone (PESF) as the polymer binder and N -methyl-2-pyrrolidone (NMP) as the solvent. The slurry was first uniformly coated on the surface of a tubular mold and then immersed into deionized water for solidification.…”

Section: Methodsmentioning

confidence: 99%

Achieving Robust Redox Stability of SOFC through Ni-YSZ Anode Layer Thinning and Inert Support Mechanical Compensation

Han

Dong

Yang

et al. 2022

ACS Appl. Energy Mater.

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The reduction/oxidation (redox) instability of a Ni-based anode during fuel-rich and fuel-lean cycling conditions has been considered as one of the critical factors hindering the widespread application of solid oxide fuel cells (SOFCs). In this work, we report a redox-robust tubular SOFC with a thick porous 3Y-TZP support and a thin Ni-YSZ functional anode layer. The peak power density of the 3Y-TZP supported SOFC is 0.25 W cm–2 at 800 °C in hydrogen, and stable operation under different discharge current levels is achieved. The 3Y-TZP supported tubular SOFC survives from seven redox cycles as well as subsequent 100 h of constant current discharge without performance degradation. The high redox stability of the 3Y-TZP supported tubular SOFC is mainly attributed to the combined mechanism of slow oxidation rate, less generated tensile stress, and mechanical strength compensation from the support.

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“…Plenty of studies have been done for gas diffusion accelerations, such as fabricating straight open pores, decreasing the thickness of the function layer, and infiltrating with nanocatalysts. Zongying Han et al [88,89] fabricated a tubular SOFC using the phase inversion method. Ni, Fe were added to the Ni-YSZ anode to improve its catalytic performance.…”

Section: Adding Catalyst Layermentioning

confidence: 99%

Review of anodic reactions in hydrocarbon fueled solid oxide fuel cells and strategies to improve anode performance and stability

Shi

Xie

Yang

et al. 2020

Mater Renew Sustain Energy

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Direct utilization of hydrocarbon fuels in solid oxide fuel cells (SOFCs) has drawn special attention for high energy conversion efficiency, low cost, and simple devices. However, when fueled with hydrocarbons, SOFCs encountered great difficulty in both performance and stability, which should be attributed to the sluggish hydrocarbon oxidizing reactions, the severe carbon deposition reactions, and the possible sulfur poisoning reactions in the anode. This review summarizes potential anode reactions in hydrocarbon-fueled SOFCs and discusses the possible anode deactivation mechanisms. Further, various strategies to improve the anode performance and stability are reviewed, including substituting alloys or increasing oxide basicity for nickel-based anodes, adopting oxide anodes, and adding catalyst layers. The advantages and challenges of each strategy are discussed. Special attention is paid on properties and models of novel oxide anodes, of which nano-metal catalysts are in-situ exsolved. The publications concerning SOFC anodes, mainly in recent 5 years, are listed and compared in this article.

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Electrochemical Properties of Tubular SOFC Based on a Porous Ceramic Support Fabricated by Phase-Inversion Method

Cited by 28 publications

References 29 publications

Residual stress analysis of a micro-tubular solid oxide fuel cell

Residual stress analysis of a micro-tubular solid oxide fuel cell

Achieving Robust Redox Stability of SOFC through Ni-YSZ Anode Layer Thinning and Inert Support Mechanical Compensation

Review of anodic reactions in hydrocarbon fueled solid oxide fuel cells and strategies to improve anode performance and stability

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