Origin and quantitative analysis of the constant phase element of a platinum SOFC cathode using the state-space model

被引：22

作者：

Ricciardi, S. ^{[1
]}

Ruiz-Morales, J. C. ^{[1
]}

Nunez, P. ^{[1
]}

机构：

[1] Univ La Laguna, Dept Quim Inorgan, Tenerife 38200, Spain

来源：

SOLID STATE IONICS | 2009年 / 180卷 / 17-19期

关键词：

Solid oxide fuel cell; State space model; Triple phase boundary; Constant phase element; Impedance spectroscopy; O-2(G)VERTICAL-BAR-YTTRIA-STABILIZED ZIRCONIA SYSTEM; FRACTAL DIMENSION; REACTION-MECHANISM; ELECTRODE; OXYGEN; IDENTIFICATION; DISPERSION; ADSORPTION; IMPEDANCE; KINETICS;

D O I：

10.1016/j.ssi.2009.05.017

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The characteristics of a solid oxide fuel cell cathode are investigated using a combination of scanning electron microscopy, electrochemical impedance spectroscopy and simulations using the state-space model (SSM). We successfully explain the shape of the impedance spectrum at several temperatures, determine kinetic parameters, measure the triple phase boundary length and deduce its width. Finally a quantitative analysis of the constant phase element using surface roughness and energy activation distribution is presented. (c) 2009 Elsevier B.V. All rights reserved.

引用

页码：1083 / 1090

页数：8

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