Aging Characteristics of Lithium Titanate Batteries under Ultrahigh Discharge Rate

The aging characteristics of lithium titanate batteries under ultra-high discharge rate were studied in this paper. The discharge characteristics is highly temperature-dependent under 55C discharge rate. The capacity retention rate is about 73% after 100 cycles of 55C discharge. The in-situ analysis...

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Bibliographic Details
Published in:E3S web of conferences 2021-01, Vol.252, p.2003
Main Authors: Liu, Zehui, Wang, Chu, Miao, Chen, Gao, Yinghui, Sun, Yaohong
Format: Article
Language:English
Subjects:
Aging
Batteries
Discharge
Lithium
Temperature dependence
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Summary:The aging characteristics of lithium titanate batteries under ultra-high discharge rate were studied in this paper. The discharge characteristics is highly temperature-dependent under 55C discharge rate. The capacity retention rate is about 73% after 100 cycles of 55C discharge. The in-situ analysis incremental capacity analysis (ICA) was used to analyze the aging mechanism, and it was found that the main reason for the capacity fading was the loss of active material of the positive electrode, which leads to an increase of polarization resistance under 55C discharge rate.
ISSN:2267-1242
2555-0403
2267-1242
DOI:10.1051/e3sconf/202125202003