介电谱
荷电状态
等效电路
电池(电)
材料科学
电阻抗
锂(药物)
健康状况
锂离子电池
恒相元件
电化学
离子
电阻器
等效阻抗变换
分析化学(期刊)
电气工程
电子工程
电压
化学
工程类
电极
物理
热力学
功率(物理)
有机化学
物理化学
内分泌学
医学
色谱法
作者
Haiqing Xiao,Ziqiang Tao,Bo Hong,Hongwei Wang,Yanjun Fu,Nianpeng Si,Hua Bai
出处
期刊:IOP conference series
[IOP Publishing]
日期:2020-04-01
卷期号:474 (5): 052038-052038
被引量:4
标识
DOI:10.1088/1755-1315/474/5/052038
摘要
Abstract It is essential to know the behavior of the battery at all relevant internal and external conditions when the battery cell is in the new and the aging state. Electrochemical impedance spectroscopy (EIS) is a viable approach that can be used in lithium ion batteries (LIBs) to investigate the electrochemical behavior. In this paper, in order to investigate the state of charge effects on the LIBs, three types of commercial LIB cells were used, and the EIS measurements were performed under 100%, 80%, 50%, 20% and 0% SOC, respectively. An equivalent circuit model (ECM) including two constant phase angle elements in parallel with resistor elements is established to study the impedance characteristics for LIBs. The influence of the state of charge on the parameters of the ECM was analyzed. Based on the results we think EIS combined with ECM simulation tool can be used to derive useful information for improving battery design and state of health prediction.
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