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Solid Oxide Fuel Cell Electrode 3D Microstructure and Performance Modeling

Rhazaoui, Rhazaoui, Cai, Qiong, Shearing, Paul, Adjiman, Claire and Brandon, NP (2011) Solid Oxide Fuel Cell Electrode 3D Microstructure and Performance Modeling ECS Transactions, 35 (1). pp. 1097-1105.

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A strong correlation exists between the performance of Solid Oxide Fuel Cells (SOFCs) and their electrode microstructures, requiring an improved understanding of this relationship if more effective application-specific SOFC electrodes are to be designed. A model has been developed capable of generating a random 3D electrode microstructure and predicting its performance by analyzing structure properties such as porosity, percolation of the various phases and the length and distribution of triple phase boundaries. A Monte Carlo process is used initially to randomly position spherical particles of the three different phases, in a packed bed. Next, the pore former particles are removed. The remaining particles are then expanded uniformly to represent the sintering process, resulting in a network of particles of ionic and electronic phases overlapping each other, creating a distinctive, examinable electrode. This paper presents the impact of a range of technologically important parameters such as particle size and sintering expansion coefficient on electrode performance.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Chemical and Process Engineering
Authors :
Rhazaoui, Rhazaoui
Shearing, Paul
Adjiman, Claire
Brandon, NP
Date : 2011
DOI : 10.1149/1.3570090
Depositing User : Melanie Hughes
Date Deposited : 02 Oct 2018 15:32
Last Modified : 02 Oct 2018 15:32

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