The importance of cell geometry for electrochemical impedance spectroscopy in three-electrode lithium ion battery test cells

被引：82

作者：

Klink, Stefan

Madej, Edyta ^{[1
]}

Ventosa, Edgar

Lindner, Armin ^{[2
]}

Schuhmann, Wolfgang ^{[1
]}

La Mantia, Fabio ^{[1
]}

机构：

[1] Ruhr Univ Bochum, CES, D-44780 Bochum, Germany

[2] Ruhr Univ Bochum, Feinmech Werkstatt, D-44780 Bochum, Germany

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2012年 / 22卷

关键词：

Electrochemical impedance spectroscopy; Lithium ion batteries; Current distribution; Cell geometry; Reference electrode; DISTORTIONS; SOFC;

D O I：

10.1016/j.elecom.2012.06.010

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

070208 [无线电物理];

摘要：

The influence of geometric and electrochemical asymmetries on the impedance spectra recorded in three-electrode test cells for lithium ion batteries was investigated. These asymmetries lead to distortions such as e.g. scaling effects which appear in common Swagelok cells. Moving the reference electrode to a coaxial position in combination with a precise alignment of the electrode stack optimized the geometry of current lines, leading to reliable impedance spectra up to frequencies of 50 kHz regardless of the electrode configuration. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：120 / 123

页数：4

共 10 条

[1]

Reference electrode placement in thin solid electrolytes [J].