A Finite Length Cylinder Model for Mixed Oxide-Ion and Electron Conducting Cathodes Suited for Intermediate-Temperature Solid Oxide Fuel Cells

被引：5

作者：

Jin, Xinfang ^{[1
]}

Wang, Jie ^{[1
]}

Jiang, Long ^{[1
,2
]}

White, Ralph E. ^{[3
]}

Huang, Kevin ^{[1
]}

机构：

[1] Univ S Carolina, Dept Mech Engn, Columbia, SC 29208 USA

[2] Yangtze Univ, Appl Phys & Informat Technol Res Ctr, Jingzhou 434023, Hubei, Peoples R China

[3] Univ S Carolina, Dept Chem Engn, Columbia, SC 29208 USA

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2016年 / 163卷 / 06期

关键词：

SOFC CATHODES; 3-DIMENSIONAL RECONSTRUCTION; COULOMETRIC TITRATION; DOPED SRCOO3-DELTA; IMPEDANCE RESPONSE; POTENTIAL CATHODE; OXYGEN REDUCTION; SURFACE-REACTION; LA1-XSRXCOO3-DELTA; KINETICS;

D O I：

10.1149/2.1011606jes

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A physics-based model is presented to simulate the electrochemical behavior of mixed ion and electron conducting (MIEC) cathodes for intermediate-temperature solid oxide fuel cells. Analytic solutions for both transient and impedance models based on a finite length cylinder are derived. These solutions are compared to their infinite length counterparts. The impedance solution is also compared to experimental electrochemical impedance spectroscopy data obtained from both a traditional well-established La0.6Sr0.4Co0.2Fe0.8O3-delta (LSCF) cathode and a new SrCo0.9Nb0.1O3-delta (SCN) porous cathode. The impedance simulations agree well with the experimental values, demonstrating that the new models can be used to extract electro-kinetic parameters of MIEC SOFC cathodes. (C) The Author(s) 2016. Published by ECS. All rights reserved.

引用

页码：F548 / F563

页数：16

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