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.

引用

页数：5

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