Co2MnO4 spinel-palladium co-infiltrated La0.7Ca0.3Cr0.5Mn0.5O3− cathodes for intermediate temperature solid oxide fuel cells

He, Hong; Zhang, Lan; Babaei, Alireza; Wang, Xin

doi:10.1016/j.jallcom.2011.07.097

Cited by 10 publications

(5 citation statements)

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“…11 A number of studies have also focused on infiltrating more than one phase onto porous electrolyte phase scaffolds to stabilize the electrocatalyst or protect against catalyst poisoning or to include a catalyst promoter. [12][13][14][15] A major advantage offered by infiltrated electrodes due to their nano-sized particles is a much higher volumetric density of TPB length as well as interfacial area between the electrocatalyst and electrolyte phases. A second advantage is that most potentially detrimental reactions between the electrode and electrolyte materials are minimized because the electrode materials can be deposited at much lower temperatures.…”

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confidence: 99%

An Effective Property Model for Infiltrated Electrodes in Solid Oxide Fuel Cells

Hardjo

Monder

Karan

2013

J. Electrochem. Soc.

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An effective property model for infiltrated electrodes is reported that predicts the dependence of effective electronic conductivity and active TPB length on experimentally controllable and measurable parameters. The model uses results from percolation theory and geometric arguments to compute the properties of Ni-infiltrated anodes of solid oxide fuel cells. While the predicted electronic conductivity is comparable to that for a typical composite Ni anode, the predicted effective TPB length is approximately two orders of magnitude higher for a Ni infiltrated anode with a Ni volume fraction of less than 10%. The predictions of the developed model are compared and validated against three independent experimental datasets. Parametric studies using this model suggest that decreasing the particle sizes of the infiltrated film and the substrate, as well as the substrate porosity will increase the active TPB length. While decreasing substrate particle size also increases the effective electronic conductivity of the electrode, decreasing substrate porosity has the opposite effect. Finally, a methodology is presented to quantitatively relate an experimentally observed degradation in effective electronic conductivity of infiltrated electrodes to a reduction in active TPB length as a function of time.

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An Effective Property Model for Infiltrated Electrodes in Solid Oxide Fuel Cells

Hardjo

Monder

Karan

2013

J. Electrochem. Soc.

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“…Solution impregnation technique is one of the widely used techniques to prepare nanostructured SOFC cathodes with good electrochemical performance [18][19][20][21][22][23][24][25][26]. There are several reports available on application of solution impregnation of SOFC cathodes.…”

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confidence: 99%

Enhanced Electrochemical Performance of La0.7Pr0.3Ba0.5Sr0.5Co1.5Fe0.5O5+δ Cathodes for Solid Oxide Fuel Cells by La2NiO4 impregnation

Wang,

Li,

Zheng

et al. 2024

Preprint

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Three types of double perovskite La1-xPrxBa0.5Sr0.5Co1.5Fe0.5O5+δ(x=1,0.3,0) are prepared using the EDTA-citrate method and identified as solid oxide fuel cell (SOFC) cathodes. The microstructures, as well as electrochemical performances of La1-xPrxBa0.5Sr0.5Co1.5Fe0.5O5+δ (LPBSCF) and La2NiO4-impregnated LPBSCF (LN-LPBSCF) cathodes, are investigated in detail. An optimum impregnation amount of LN-LPBSCF (LN loading of 0.64 mg/cm2) electrode exhibits relatively lower electrode polarization resistance (Rp) and better stable performance as compared to that of pure LPBSCF electrode in symmetrical SOFCs. The maximum power density of LN-LPBSCF single cells is 800 mW/cm2 at 800 °C and demonstrates good stability for 100 h in short-term testing.

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“…The solution impregnation technique is among the most effective means of obtaining SOFC cathodes with better electrochemical performance [16][17][18][19][20][21][22][23]. It also has extensive applications in improving the performance of cathodes with regard to impurity contamination from e.g.…”

Section: Introductionmentioning

confidence: 99%

Highly sulfur poisoning-tolerant BaCeO₃-impregnated La_0.6Sr_0.4Co_0.2Fe_0.8O_3−δ cathodes for solid oxide fuel cells

Wang

Luo

Lin

2018

J. Phys. D: Appl. Phys.

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Electrochemical performance and sulfur (SO2) tolerance were studied on pristine La0.6Sr0.4Co0.2Fe0.8O3−δ (LSCF) and BaCeO3-impregnated LSCF (BaCeO3–LSCF) composite cathodes of solid oxide fuel cells (SOFCs). Compared to pristine LSCF electrodes, BaCeO3–LSCF composite electrodes exhibited reduced electrode polarization resistance and significantly lower activation energy for the O2 reduction reaction, indicating that BaCeO2 impregnation is effective at promoting the electrocatalytic activity of LSCF electrodes at low temperatures. Most significantly, BaCeO3–LSCF cathodes show remarkable tolerance and resistance towards sulfur via the formation of BaSO4 instead of SrSO4 on the electrode surface, preventing excess Sr deficiency at the A-site of LSCF perovskite and thus mitigating the sulfur poisoning effect. BaCeO3–LSCF cathodes show potential as highly active and excellent anti-sulfur oxygen electrodes for SOFCs.

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Co2MnO4 spinel-palladium co-infiltrated La0.7Ca0.3Cr0.5Mn0.5O3− cathodes for intermediate temperature solid oxide fuel cells

Cited by 10 publications

References 57 publications

An Effective Property Model for Infiltrated Electrodes in Solid Oxide Fuel Cells

An Effective Property Model for Infiltrated Electrodes in Solid Oxide Fuel Cells

Enhanced Electrochemical Performance of La0.7Pr0.3Ba0.5Sr0.5Co1.5Fe0.5O5+δ Cathodes for Solid Oxide Fuel Cells by La2NiO4 impregnation

Highly sulfur poisoning-tolerant BaCeO₃-impregnated La_0.6Sr_0.4Co_0.2Fe_0.8O_3−δ cathodes for solid oxide fuel cells

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Co2MnO4 spinel-palladium co-infiltrated La0.7Ca0.3Cr0.5Mn0.5O3− cathodes for intermediate temperature solid oxide fuel cells

Cited by 10 publications

References 57 publications

An Effective Property Model for Infiltrated Electrodes in Solid Oxide Fuel Cells

An Effective Property Model for Infiltrated Electrodes in Solid Oxide Fuel Cells

Enhanced Electrochemical Performance of La0.7Pr0.3Ba0.5Sr0.5Co1.5Fe0.5O5+δ Cathodes for Solid Oxide Fuel Cells by La2NiO4 impregnation

Highly sulfur poisoning-tolerant BaCeO3-impregnated La0.6Sr0.4Co0.2Fe0.8O3−δ cathodes for solid oxide fuel cells

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Product

Resources

About

Highly sulfur poisoning-tolerant BaCeO₃-impregnated La_0.6Sr_0.4Co_0.2Fe_0.8O_3−δ cathodes for solid oxide fuel cells