Electrochemical Impedance Spectroscopy-Based Electric Circuit Modeling of Lithium–Sulfur Batteries During a Discharging State
Electrochemical Impedance Spectroscopy-Based Electric Circuit Modeling of Lithium–Sulfur Batteries During a Discharging State
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DOI：
10.1109/tia.2018.2864160
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发表时间：
2019-01
影响因子：
4.4
通讯作者：
D. Stroe;V. Knap;M. Swierczynski;E. Schaltz
中科院分区：
文献类型：
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作者：
D. Stroe;V. Knap;M. Swierczynski;E. Schaltz
锂离子电池的特点是在效率，寿命和自放电方面具有非常好的性能，这使它们成为电动汽车（EV）应用的主要参与者。然而，他们无法完全克服EV里程焦虑。因此，目前正在进行研究以开发具有甚至更高重量能量密度的电池，这应该允许显著的范围增加。其中一项应该能够满足范围要求的技术是锂硫（Li-S）电池。由于广泛的研究和开发工作，这些电池接近进入市场，正在各种项目中进行评估。在本文中，我们提出了一个电路模型的锂硫袋电池，这是参数化的基础上广泛的电化学阻抗谱测量。所开发的模型进行了验证，使用静态和脉冲放电曲线，显示出良好的准确性，在预测电压的测试锂硫电池单元。
Lithium-ion batteries are characterized by having a very good performance in terms of efficiency, lifetime, and self-discharge, which allowed them to become the major player in the electric vehicle (EV) applications. However, they were not able to totally overcome the EV range anxiety. Thus, a research is carried out nowadays to develop batteries with even higher gravimetric energy density, which should allow a substantial range increase. One of the technologies, which should be able to meet the range requirements is the lithium–sulfur (Li–S) battery. Thanks to the extensive research and development efforts, these cells are close to enter the market, being evaluate in various projects. In this paper, we have proposed an electrical circuit model for a Li–S pouch cell, which was parameterized based on extensive electrochemical impedance spectroscopy measurements. The developed model was verified using static and pulse discharge profiles, showing a good accuracy in predicting the voltage of the tested Li–S battery cell.