Modeling the Electrical Conductive Paths within All‐Solid‐State Battery Electrodes,Chemical Engineering & Technology

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Modeling the Electrical Conductive Paths within All‐Solid‐State Battery Electrodes
Chemical Engineering & Technology ( IF 1.8 ) Pub Date : 2020-03-25 , DOI: 10.1002/ceat.201900501
Clara Sangrós Giménez _{1,

2} , Laura Helmers _{1,

2} , Carsten Schilde ₁ , Alexander Diener _{1,

2} , Arno Kwade _{1,

2}

Affiliation

All‐solid‐state batteries constitute a very promising energy storage device. Two very important properties of these battery cells are the ionic and the electrical conductivity, which describe the ion and the electron transport through the electrodes, respectively. In this work, a numerical method is presented to model the electrical conductivity, considering the outcome of discrete‐element method simulations and the intrinsic conductivities of both the active material particles and the conductive additive particles. The results are calibrated and validated with the help of experimental data of real manufactured electrodes. The tortuosity, which strongly influences the ionic conductivity, is also presented for the analyzed electrodes, taking their microstructure into account.

中文翻译：

模拟全固态电池电极内的导电路径

全固态电池构成了非常有前途的储能设备。这些电池单元的两个非常重要的特性是离子性和导电性，它们分别描述了离子和电子通过电极的传输。在这项工作中，提出了一种数值方法来建模电导率，同时考虑了离散元素方法模拟的结果以及活性材料颗粒和导电添加剂颗粒的固有电导率。借助实际制造的电极的实验数据对结果进行校准和验证。考虑到电极的微观结构，还显示了曲折度，该曲折度严重影响离子电导率。

更新日期：2020-03-25

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