SOFC Cathodes Prepared by Infiltration with Various LSM Precursors

Huang, Yingyi; Vohs, John M.; Gorte, Raymond J.

doi:10.1149/1.2183867

Cited by 103 publications

(108 citation statements)

References 12 publications

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“…[27][28][29][30][31] Figure 11. SEM image of FIB corss-sectioned nanoparticulate LSM-infiltrated cathode.…”

Section: Stabilitymentioning

confidence: 99%

“…Hence, persistent connectivity of the nanoparticulate networks and limited coarsening are essential to stable electrode function. Although a number of papers have been published on nanoparticle-infiltrated electrodes, [26][27][29][30][31] little mention has been made of the extended stability of such structures. The difficulty is that SOFC electrodes operate under demanding operating conditions: elevated temperatures (600°C -1000°C), thermal cycling, high local current densities, and high local potential gradients.…”

Section: Introductionmentioning

confidence: 99%

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Nanostructured Solid Oxide Fuel Cell Electrodes

2007

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The ability of Solid Oxide Fuel Cells (SOFC) to directly and efficiently convert the chemical energy in hydrocarbon fuels to electricity places the technology in a unique and exciting position to play a significant role in the clean energy revolution. In order to make SOFC technology cost competitive with existing technologies, the operating temperatures have been decreased to the range where costly ceramic components may be substituted with inexpensive metal components within the cell and stack design.However, a number of issues have arisen due to this decrease in temperature: decreased electrolyte ionic conductivity, cathode reaction rate limitations, and a decrease in anode contaminant tolerance.While the decrease in electrolyte ionic conductivities has been countered by decreasing the electrolyte thickness, the electrode limitations have remained a more difficult problem. Nanostructuring SOFC electrodes addresses the major electrode issues.The infiltration method used in this dissertation to produce nanostructure SOFC 2 electrodes creates a connected network of nanoparticles; since the method allows for the incorporation of the nanoparticles after electrode backbone formation, previously incompatible advanced electrocatalysts can be infiltrated providing electronic conductivity and electrocatalysis within well-formed electrolyte backbones. Furthermore, the method is used to significantly enhance the conventional electrode design by adding secondary electrocatalysts. Performance enhancement and improved anode contamination tolerance are demonstrated in each of the electrodes. Additionally, cell processing and the infiltration method developed in conjunction with this dissertation are reviewed.

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“…[27][28][29][30][31] Figure 11. SEM image of FIB corss-sectioned nanoparticulate LSM-infiltrated cathode.…”

Section: Stabilitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Nanostructured Solid Oxide Fuel Cell Electrodes

2007

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“…Nanoparticulate catalysts may be infiltrated into already formed SOFC electrodes to enhance electrode performance [1][2][3][4] , and new electrode designs have been devised utilizing continuous nanoparticulate networks or connected nanoparticle rafts [4][5][6][7][8][9] . In these electrode designs, the nanoparticulates not only serve as reaction sites, but also provide an electron pathway from the current collector to the individual reaction sites.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Stability of a Nanoparticle-Infiltrated Solid Oxide Fuel Cell Electrode

Sholklapper

Radmilović

Jacobson

et al. 2007

Electrochem. Solid-State Lett.

121

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“…10,11) The Pt-LSM cermet used for both the cathode and anode in Cell-1 exhibited the highest current density. The current density performance in Cell-1 was caused by the special structure of the Pt-LSM cermet electrodes.…”

Section: Current Densities For Different Electrode Materialsmentioning

confidence: 99%

Carbon Dioxide Electrolysis for a Carbon-recycling Iron-making System

2012

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A new energy transformation system based on carbon recycling has been proposed; it is called the active carbon recycling energy system (ACRES) and has been developed in order to reduce the emission of carbon dioxide (CO2) to the atmosphere. An experimental study based on the ACRES concept for carbon monoxide (CO) regeneration via high-temperature electrolysis of CO2 was carried out using several solid oxide electrolysis cells (SOECs). Experimental results showed that a cell with the structure Pt-LSM cermet|YSZ|Pt-LSM cermet exhibited the highest current density and CO production rates of 0.52 mA·cm -2 and 0.75 μmol·min -1 ·cm -2 respectively, at 900°C. On the basis of the cell's electrolytic characteristics, the scale of a combined ACRES CO2 electrolysis/iron-making facility was estimated.

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SOFC Cathodes Prepared by Infiltration with Various LSM Precursors

Cited by 103 publications

References 12 publications

Nanostructured Solid Oxide Fuel Cell Electrodes

Nanostructured Solid Oxide Fuel Cell Electrodes

Synthesis and Stability of a Nanoparticle-Infiltrated Solid Oxide Fuel Cell Electrode

Carbon Dioxide Electrolysis for a Carbon-recycling Iron-making System

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