中国科学院深圳先进技术研究院机构知识库(SIAT OpenIR): Cycle-life and degradation mechanism of LiFePO4-based lithium-ion batteries at room and elevated temperatures.
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Cycle-life and degradation mechanism of LiFePO4-based lithium-ion batteries at room and elevated temperatures.
Cao, Wenpeng; Li, Juan; Wu, Zhengbin
2016
Source PublicationIONICS
Subtype期刊论文
AbstractCycle-life tests of commercial 22650-type olivine-type lithium iron phosphate (LiFePO4)/graphite lithium-ion batteries were performed at room and elevatedtemperatures. A number of non-destructive electrochemical techniques, i.e., capacity recovery using a small current density, electrochemical impedance spectroscopy, and differential voltage and differential capacity analyses, were performed to deduce the degradation mechanism of these batteries. To further characterize their internal materials, we disassembled the batteries, and material analyses were performed. All results indicated that loss in active lithium was the main reason for battery aging, and the cells showed diverse recession of active materials at different temperatures. In addition, high discharge rate and growing impedance lead to a capacity fall down at 25 A degrees C at approximately 300-500 cycles.
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Indexed BySCI
Language英语
Department电动汽车
Document Type期刊论文
Identifierhttp://ir.siat.ac.cn/handle/172644/9795
Collection其他
AffiliationIONICS
Recommended Citation
GB/T 7714
Cao, Wenpeng,Li, Juan,Wu, Zhengbin. Cycle-life and degradation mechanism of LiFePO4-based lithium-ion batteries at room and elevated temperatures.[J]. IONICS,2016.
APA Cao, Wenpeng,Li, Juan,&Wu, Zhengbin.(2016).Cycle-life and degradation mechanism of LiFePO4-based lithium-ion batteries at room and elevated temperatures..IONICS.
MLA Cao, Wenpeng,et al."Cycle-life and degradation mechanism of LiFePO4-based lithium-ion batteries at room and elevated temperatures.".IONICS (2016).
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