Ageing Study of 26650 Type Li-ion Batteries Module at the Charge-Discharge Rates of 1 C

被引：2
|
作者：
Tao, Yibin [1 ]
Ye, Jilei [1 ]
Li, Xinzhou [2 ]
Zhang, Qichao [2 ]
Pan, Aiqiang [3 ]
Liao, Qiangqiang [2 ]
Yang, Xiu [2 ]
机构：
[1] China Elect Power Res Inst, Nanjing Branch, Nanjing 210003, Peoples R China
[2] Shanghai Univ Elect Power, Shanghai Engn Res Ctr Elect Energy Convers, Shanghai Key Lab Mat Protect & Adv Mat Elect Powe, Shanghai 200090, Peoples R China
[3] State Grid Shanghai Municipal Elect Power Co, Shanghai 200122, Peoples R China
来源：
MATERIALS SCIENCE, ENERGY TECHNOLOGY AND POWER ENGINEERING III (MEP 2019) | 2019年 / 2154卷
基金：
上海市自然科学基金;
关键词：
Retired battery module; charge-discharge cycling; capacity fading; electrochemical impedance spectroscopy; ELECTROCHEMICAL IMPEDANCE; LITHIUM; MECHANISMS; PACKS; STATE;
D O I：
10.1063/1.5125355
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
A 26650-type lithium-ion batteries module was cycled at the charge-discharge rates of 1 C at room temperature (20 +/- 2 degrees C) until its state-of-health (SOH) declined to 60%. Its degradation was investigated by capacity fading characterization, electrochemical impedance spectroscopy (EIS). The results show the cycle number of the module is 1300 cycles when its SOH declines from 100% to 60%. The film resistance R-f, charge transfer resistance R-ct and Warburg impedance ZW of the battery increase gradually with cycling while the ohmic resistance R-s is almost unchanged. Of all the resistances among R-s, R-f, R-ct and Z(w), the contribution of R-s to the impedance of the module is primary.
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页数：5
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