Numerical and experimental analysis of the effect of pore formers on the processing and properties of solid oxide fuel cell electrode

Reynier, Thibault; Martín, Christophe; Bouvard, D.; Carry, C.; Laucournet, Richard

doi:10.1016/j.jeurceramsoc.2015.03.014

Cited by 8 publications

(3 citation statements)

References 24 publications

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“…This process can be mimicked in dp3D by removing a prescribed number of particles before sintering. 18) Various pore former/particle size ratios can be tested as shown in Fig. 3.…”

Section: Microstructure Control Using Pore Formersmentioning

confidence: 99%

Sintered ceramics with controlled microstructures: numerical investigations with the Discrete Element Method

Martín

Yan

Jauffrès

et al. 2016

J. Ceram. Soc. Japan

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International audienceThe modelling of processes involving powder needs taking into account the particulate nature of the materials involved. The Discrete Element Method (DEM) is well suited for this task. It allows the macroscopic behavior of an assembly of particles to be calculated from the contact forces generated between each particle. Particle rearrangement, a significant signature of powder materials, is explicitly taken into account. We show that DEM has demonstrated use and significant potential for understanding the link between defect formation and initial microstructure. We present diverse examples of application on free and constrained sintering. (C) 2016 The Ceramic Society of Japan. All rights reserved

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“…This process can be mimicked in dp3D by removing a prescribed number of particles before sintering. 18) Various pore former/particle size ratios can be tested as shown in Fig. 3.…”

Section: Microstructure Control Using Pore Formersmentioning

confidence: 99%

Sintered ceramics with controlled microstructures: numerical investigations with the Discrete Element Method

Martín

Yan

Jauffrès

et al. 2016

J. Ceram. Soc. Japan

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“…21,22 The size of the pore former is not expected to impact the volume fraction of porosity, but the NiO and GDC particle size will. 9,23 Scale up of SOFCs.-For SOFCs produced through tape casting, the organics in the green tape significantly impact the production of cells. The combustion of dispersant, binder, plasticizer, and pore former which occurs during sintering can cause various defects and even destruction of the entire cell.…”

Section: Resultsmentioning

confidence: 99%

Optimization of SOFC Anode Microstructure for Performance and Highly Scalable Cells Through Graded Porosity

Ostrovskiy,

Saqib,

Hong

et al. 2024

J. Electrochem. Soc.

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Anode porosity is fundamental to performance and durability of SOFCs. This research evaluated the role of pore former loading in the anode layer to optimize the trade-off between cell performance and flatness. It was found that intermediate levels of organic loading through pore former resulted in the highest performance while also the greatest degree of curvature. Grading the porosity such that it decreases towards the electrolyte improved the performance at lower temperatures and fuel ratios. Graded anodes only improved flatness when larger loadings of pore former were used, but this resulted in a loss of performance. Based on our results, the anode microstructure closest to the electrolyte strongly affects performance, while the microstructure towards the fuel affects flatness.

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“…The evolution of volatile matter during the heat treatment also contributes toward pore creation. Although much effort has been devoted in the past to achieve a uniform porous structure, ,,− there is limited flexibility to control the porosity distribution in the final structure.…”

Section: Introductionmentioning

confidence: 99%

Configuring the Porosity and Microstructure of Carbon Paper Electrode Using Pore Formers and Its Influence on the Performance of PEMFC

et al. 2020

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Carbon papers (CPs) are used as an electrode backing in PEMFC. It assists the diffusion of both the reactant gases and products toward and from the reaction site and aids the flow of electrons. CP is a carbon/carbon composite made by patterning of carbon fibers in the form of highly porous sheets called preforms, followed by composite formation. Different pore formers have been incorporated into the CP, and their effect on porosity, permeability, structure, and electrical conductivity have been analyzed and found to be significant. The unit PEMFC shows a peak output power density of 797.2 and 756.8 mW/cm 2 with camphor and urea as pore formers, compared to 576.2 mW/cm 2 obtained using the paper prepared without pore former. The effect of pore formers on the separate sections of the polarization curves has been discussed. Further, samples with urea and camphor show comparable performance with the commercial SGL paper.

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Numerical and experimental analysis of the effect of pore formers on the processing and properties of solid oxide fuel cell electrode

Cited by 8 publications

References 24 publications

Sintered ceramics with controlled microstructures: numerical investigations with the Discrete Element Method

Sintered ceramics with controlled microstructures: numerical investigations with the Discrete Element Method

Optimization of SOFC Anode Microstructure for Performance and Highly Scalable Cells Through Graded Porosity

Configuring the Porosity and Microstructure of Carbon Paper Electrode Using Pore Formers and Its Influence on the Performance of PEMFC

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