3D finite element model for reconstructed mixed-conducting cathodes: II. Parameter sensitivity analysis

被引：23

作者：

Carraro, Thomas ^{[1
]}

Joos, Jochen ^{[2
]}

Rueger, Bernd ^{[2
]}

Weber, Andre ^{[2
]}

Ivers-Tiffee, Ellen ^{[2
,3
]}

机构：

[1] Heidelberg Univ, IAM, D-69120 Heidelberg, Germany

[2] KIT, IWE, D-76131 Karlsruhe, Germany

[3] KIT, CFN, D-76131 Karlsruhe, Germany

来源：

ELECTROCHIMICA ACTA | 2012年 / 77卷

关键词：

SOFC; Sensitivity; Parameter estimation; 3D FEM model; 3D Reconstruction; MICROSTRUCTURE; TIME;

D O I：

10.1016/j.electacta.2012.04.163

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A micro-model for the calculation of the area specific resistance ASR(cat) of a porous mixed ionic electronic conducting (MIEC) cathode, which resolves the microstructure, has been presented in Part I of this article. Four processes are considered relevant for a parametric study of this solid oxide fuel cell (SOFC) model. These comprise a charge transfer process between the electrode and the electrolyte and three noncharge transfer processes in the porous electrode: (i) gas diffusion, (ii) bulk diffusion and (iii) surface reaction. In Part II we present a systematic parameter sensitivity analysis of the four parameters that describe these processes. We define an index called sensitivity factor that allows the quantitative determination of the importance of the different processes for a reconstructed 3D microstructure. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：309 / 314

页数：6

共 26 条

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