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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:
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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