Comprehensive Insights into Nucleation, Autocatalytic Growth, and Stripping Efficiency for Lithium Plating in Full Cells
Journal Article
·
· ACS Energy Letters
- Argonne National Lab. (ANL), Lemont, IL (United States). Advanced Photon Source (APS)
- National Renewable Energy Lab. (NREL), Golden, CO (United States)
- Argonne National Lab. (ANL), Lemont, IL (United States)
Synchrotron high-energy X-ray diffraction is used to enable nondestructive detection and quantification of heterogeneous lithium plating in working batteries. In this study a LiNi0.5Mn0.3Co0.2O2/graphite pouch cell was operated under 6C fast-charge rate for greater than 1200 cycles. The magnitude and spatial distribution of lithium plating, lithium stripping, and the effect of metallic lithium deposition on lithium intercalation into graphite were quantified. Fully intercalated graphite (LiC6) was detected after discharge with a lateral distribution closely correlated with lithium plating, which can be used as a higher-sensitivity indicator for lithium plating. Over an extended cycle life, the overall metallic lithium concentration followed a sigmoidal curve indicating two-stage continuous nucleation and autocatalytic growth. The lithium stripping efficiency underwent an exponential decay as a function of cycle life as the buildup of metallic lithium hindered the efficient dissolution back into the electrolyte. The findings provide direct insights into the characteristics of lithium plating and stripping under realistic fast-charge conditions.
- Research Organization:
- National Renewable Energy Laboratory (NREL), Golden, CO (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Energy Efficiency and Renewable Energy (EERE), Transportation Office. Vehicle Technologies Office
- Grant/Contract Number:
- AC36-08GO28308
- OSTI ID:
- 1832211
- Report Number(s):
- NREL/JA--5700-80377; MainId:42580; UUID:a8b63464-328c-4a5b-a5a8-a0b2f321b239; MainAdminID:63096
- Journal Information:
- ACS Energy Letters, Journal Name: ACS Energy Letters Journal Issue: 10 Vol. 6; ISSN 2380-8195
- Publisher:
- American Chemical Society (ACS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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