Revisiting the initial irreversible capacity loss of LiNi0.6Co0.2Mn0.2O2 cathode material batteries
Abstract
Layered LiNi0.6Co0.2Mn0.2O2 (NCM622) attracts widespread attention primarily due to its potential for high energy density and moderate thermal stability. However, the low initial coulombic efficiency (ICE) of the material limits the maximum utilization of their capacity. The capacity loss in the first cycle occurs under 4.0V and keep almost constant are considered as common characteristics for NCM-based materials. A clear cognition on the initial capacity loss may light the way to improve the practical reversible capacity of NCM622 at 4.0V. Conducting operando X-ray diffraction during galvanostatic charge/discharge cycling at different temperature (25 degrees C, 45 degrees C and 60 degrees C) and different current (0.1C, 0.01C, 1C=120 mA g-1) in the voltage range of 2.7-4.0V, we find that only 8% of the measured initial irreversible capacity loss is associated with parasitic reactions that form cathode/electrolyte interface, and that the dominant contributors include the slow Li+ diffusion kinetics (similar to 46% contribution) and irreversible O3/H1-3 phase transition (similar to 46% contribution). Finally, this semi-quantitative study provides new insight on initial capacity loss, guiding further targeted modification and fully utilization of NCM622.
- Authors:
-
- Tsinghua Univ., Beijing (China)
- Nanjing Normal University (China)
- Argonne National Lab. (ANL), Lemont, IL (United States)
- Publication Date:
- Research Org.:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Org.:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE), Office of Sustainable Transportation. Vehicle Technologies Office (VTO); National Natural Science Foundation of China (NSFC); Ministry of Science and Technology of China; Tsinghua University; USDOE
- OSTI Identifier:
- 1957747
- Alternate Identifier(s):
- OSTI ID: 1962278
- Grant/Contract Number:
- AC02-06CH11357; 2021YFB2501900; 2019YFA0705703; 2019YFE0100200; U1564205; 51706117; 2021THFS0216
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Energy Storage Materials
- Additional Journal Information:
- Journal Volume: 50; Journal ID: ISSN 2405-8297
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 25 ENERGY STORAGE; LiNi0.6Co0.2Mn0.2O2; initial irreversible capacity loss; Li+ diffusion kinetics; structural change; lithium-ion battery
Citation Formats
Hu, Qiao, Wu, Yanzhou, Ren, Dongsheng, Liao, Jiaying, Song, Youzhi, Liang, Hongmei, Wang, Aiping, He, Yufang, Wang, Li, Chen, Zonghai, and He, Xiangming. Revisiting the initial irreversible capacity loss of LiNi0.6Co0.2Mn0.2O2 cathode material batteries. United States: N. p., 2022.
Web. doi:10.1016/j.ensm.2022.05.038.
Hu, Qiao, Wu, Yanzhou, Ren, Dongsheng, Liao, Jiaying, Song, Youzhi, Liang, Hongmei, Wang, Aiping, He, Yufang, Wang, Li, Chen, Zonghai, & He, Xiangming. Revisiting the initial irreversible capacity loss of LiNi0.6Co0.2Mn0.2O2 cathode material batteries. United States. https://doi.org/10.1016/j.ensm.2022.05.038
Hu, Qiao, Wu, Yanzhou, Ren, Dongsheng, Liao, Jiaying, Song, Youzhi, Liang, Hongmei, Wang, Aiping, He, Yufang, Wang, Li, Chen, Zonghai, and He, Xiangming. Tue .
"Revisiting the initial irreversible capacity loss of LiNi0.6Co0.2Mn0.2O2 cathode material batteries". United States. https://doi.org/10.1016/j.ensm.2022.05.038. https://www.osti.gov/servlets/purl/1957747.
@article{osti_1957747,
title = {Revisiting the initial irreversible capacity loss of LiNi0.6Co0.2Mn0.2O2 cathode material batteries},
author = {Hu, Qiao and Wu, Yanzhou and Ren, Dongsheng and Liao, Jiaying and Song, Youzhi and Liang, Hongmei and Wang, Aiping and He, Yufang and Wang, Li and Chen, Zonghai and He, Xiangming},
abstractNote = {Layered LiNi0.6Co0.2Mn0.2O2 (NCM622) attracts widespread attention primarily due to its potential for high energy density and moderate thermal stability. However, the low initial coulombic efficiency (ICE) of the material limits the maximum utilization of their capacity. The capacity loss in the first cycle occurs under 4.0V and keep almost constant are considered as common characteristics for NCM-based materials. A clear cognition on the initial capacity loss may light the way to improve the practical reversible capacity of NCM622 at 4.0V. Conducting operando X-ray diffraction during galvanostatic charge/discharge cycling at different temperature (25 degrees C, 45 degrees C and 60 degrees C) and different current (0.1C, 0.01C, 1C=120 mA g-1) in the voltage range of 2.7-4.0V, we find that only 8% of the measured initial irreversible capacity loss is associated with parasitic reactions that form cathode/electrolyte interface, and that the dominant contributors include the slow Li+ diffusion kinetics (similar to 46% contribution) and irreversible O3/H1-3 phase transition (similar to 46% contribution). Finally, this semi-quantitative study provides new insight on initial capacity loss, guiding further targeted modification and fully utilization of NCM622.},
doi = {10.1016/j.ensm.2022.05.038},
journal = {Energy Storage Materials},
number = ,
volume = 50,
place = {United States},
year = {Tue May 24 00:00:00 EDT 2022},
month = {Tue May 24 00:00:00 EDT 2022}
}
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