The influence of laterally inhomogeneous contacts on the impedance of solid materials: A three-dimensional finite-element study

被引：91

作者：

Fleig, J ^{[1
]}

Maier, J ^{[1
]}

机构：

[1] Max Planck Inst Festkorperforsch, D-70569 Stuttgart, Germany

来源：

JOURNAL OF ELECTROCERAMICS | 1997年 / 1卷 / 01期

关键词：

impedance; porous electrode; inhomogeneous contact; finite element method; potential distribution; current constriction;

D O I：

10.1023/A:1009902532596

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The total impedance of samples with electrodes exhibiting only partial contact (porous electrodes) is investigated using the finite element method in three dimensions. Emphasis is put on porous electrodes built up of arrays of small perfect contacts. An equivalent circuit to analyze the impedance spectra is put on a firm basis enabling the reliable determination of bulk properties of "imperfectly" contacted samples. Approximations are given to estimate the contact geometry impedance. The results are also applicable to other imperfect contact problems as occurring at grain boundaries.

引用

页码：73 / 89

页数：17

共 45 条

[1]

Badwal S. P. S., 1995, Key Engineering Materials, V111-112, P109

[2] IMPEDANCE SPECTROSCOPY OF THE PT YTTRIA DOPED CERIA INTERFACE [J].

BADWAL, SPS ;

DEBRUIN, HJ ;

FRANKLIN, AD .

SOLID STATE IONICS, 1983, 9-10 (DEC) :973-977

[3] GRAIN-BOUNDARY RESISTIVITY IN ZIRCONIA-BASED MATERIALS - EFFECT OF SINTERING TEMPERATURES AND IMPURITIES [J].

BADWAL, SPS .

SOLID STATE IONICS, 1995, 76 (1-2) :67-80

[4] YTTRIA TETRAGONAL ZIRCONIA POLYCRYSTALLINE ELECTROLYTES FOR SOLID-STATE ELECTROCHEMICAL-CELLS [J].

BADWAL, SPS .

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 1990, 50 (05) :449-462

[5] YTTRIA ZIRCONIA - EFFECT OF MICROSTRUCTURE ON CONDUCTIVITY [J].

BADWAL, SPS ;

DRENNAN, J .

JOURNAL OF MATERIALS SCIENCE, 1987, 22 (09) :3231-3239

[6] STUDY OF SOLID ELECTROLYTE POLARIZATION BY A COMPLEX ADMITTANCE METHOD [J].

BAUERLE, JE .

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 1969, 30 (12) :2657-&

[7] A NONLINEAR LEAST-SQUARES FIT PROCEDURE FOR ANALYSIS OF IMMITTANCE DATA OF ELECTROCHEMICAL SYSTEMS [J].

BOUKAMP, BA .

SOLID STATE IONICS, 1986, 20 (01) :31-44

[8] THE OXYGEN-TRANSFER PROCESS ON SOLID OXIDE NOBLE-METAL ELECTRODES, STUDIED WITH IMPEDANCE SPECTROSCOPY, DC POLARIZATION AND ISOTOPE-EXCHANGE [J].

BOUKAMP, BA ;

VANHASSEL, BA ;

VINKE, IC ;

DEVRIES, KJ ;

BURGGRAAF, AJ .

ELECTROCHIMICA ACTA, 1993, 38 (14) :1817-1825

[9] DIFFUSION-LIMITED CHARGE TRANSPORT AT PLATINUM-ELECTRODES ON DOPED CEO2 [J].

BRAUNSHTEIN, D ;

TANNHAUSER, DS ;

RIESS, I .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1981, 128 (01) :82-89

[10] THE AC CONDUCTIVITY OF POLYCRYSTALLINE LISICON, LI2+2XZN1-XGEO4, AND A MODEL FOR INTERGRANULAR CONSTRICTION RESISTANCES [J].

BRUCE, PG ;

WEST, AR .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1983, 130 (03) :662-669

← 1 2 3 4 5 →