Tool for Tortuosity Estimation in Lithium Ion Battery Porous Electrodes

被引：149

作者：

Ebner, Martin ^{[1
]}

Wood, Vanessa ^{[1
]}

机构：

[1] Swiss Fed Inst Technol, Lab Nanoelect, Dept Informat Technol & Elect Engn, CH-8092 Zurich, Switzerland

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2015年 / 162卷 / 02期

关键词：

INHOMOGENEITIES;

D O I：

10.1149/2.0111502jes

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

We present an open source software application "BruggemanEstimator" that allows a user to estimate the tortuosity of a porouselectrode. BruggemanEstimator determines the Bruggeman exponent based on the Differential Effective Medium approximation and as input requires only two microscope images: one of the top and one of a cross section through an electrode. These images, which can be easily acquired with a scanning electron or optical microscope, are used to extract a sampling of active particle shapes as well as the orientation of the particles within the electrode. We validate the accuracy of BruggemanEstimator by comparing the estimated Bruggeman exponents to values calculated by performing numerical diffusion simulations on three-dimensional microstructures obtained from tomographic techniques. (C) The Author(s) 2014. Published by ECS.

引用

页码：A3064 / A3070

页数：7

共 22 条

[1] Comparison between computer simulations and experimental data for high-rate discharges of plastic lithium-ion batteries [J].