﻿ 锂离子电池介观尺度光滑粒子水力学模型

### 锂离子电池介观尺度光滑粒子水力学模型

1. 中国科学院广州能源研究所先进能源系统实验室, 中国科学院可再生能源重点实验室, 广州 510640
• 收稿日期:2013-07-31 修回日期:2013-09-12 发布日期:2013-10-30
• 通讯作者: 蒋方明 E-mail:jiangfm@ms.giec.ac.cn
• 基金资助:

国家自然科学基金(51206171);中国科学院广州能源研究所所长创新基金(y207r31001)和中国科学院百人计划资助项目

### A Mesoscale Smoothed Particle Hydrodynamics Model for Lithium-Ion Batteries

ZENG Jian-Bang, JIANG Fang-Ming

1. Laboratory of Advanced Energy System, CAS Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, P. R. China
• Received:2013-07-31 Revised:2013-09-12 Published:2013-10-30
• Contact: JIANG Fang-Ming E-mail:jiangfm@ms.giec.ac.cn
• Supported by:

The project was supported by the National Natural Science Foundation of China (51206171), Director Innovation Foundation of Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences (y207r31001), and the Chinese Academy of Sciences“100 Talents”Plan.

Abstract:

We develop a model for the multi-disciplinary transport coupled electrochemical reaction processes in lithium-ion batteries via a smoothed particle hydrodynamics numerical approach. This model is based on a mesoscopic treatment to the micropore structures of electrodes. Focusing on the effects of solid active particle size, this work explores the feasibility of using this model for electrode microstructure design. The model results provide detailed distributive information of all the primary and participating parameters, including Li+ concentration in the electrolyte, Li concentration in solid active particles, solid/electrolyte phase potential, and transfer current density. Furthermore, macroscopic parameters such as the output voltage are also determined. Based on the simulation results, the underlying physicochemical fundamentals are analyzed and the relationships between the macroscopic performance of the battery and the size of solid active particles are revealed. The battery having the smallest solid active particles in both electrodes features a more uniform Li distribution inside the particles and a more uniform distribution of electrochemical reactions on the surface of each particle, leading to a higher output voltage.

MSC2000:

• O646