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Title: Extreme Fast Charge Challenges for Lithium-Ion Battery: Variability and Positive Electrode Issues

Journal Article · · Journal of the Electrochemical Society
DOI:https://doi.org/10.1149/2.0731910jes· OSTI ID:1527021

Enabling a 10 min fast charge for electric vehicles is a possible route to reduce range anxiety and increase the utility of electric vehicles. While lithium plating during fast charging is a known challenge, the full suite of limitations which occur in full cells during a 10 min fast charge are unknown. In the present work the central constraints of extreme fast charging are explored through extensive experiments and analysis in single layer graphite/NMC532 pouch cells. Methods of developing fast-charging protocols considering the impedance and transport limitations are presented and the relative benefits of altering the charging rate, profile, relaxation, etc., are investigated. Analysis during and at the end of cycling identified both known and unexpected aging pathways. The most distinct outcomes from the work are a significant increase in cell-to-cell variability as the number of fast charge cycles increase [up to 11% (1s)] and the identification of distinct aging of the NMC532 positive electrode including cracking of the secondary particles and a trend towards under-lithiation of the positive electrode. While significant aging of the positive electrode was observed, only a few conditions had discernible Li plating and no distinct reversible Li signature was seen during periodic reference performance tests.

Research Organization:
Argonne National Lab. (ANL), Argonne, IL (United States); Idaho National Lab. (INL), Idaho Falls, ID (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V)
Grant/Contract Number:
AC02-06CH11357; AC07-05ID14517
OSTI ID:
1527021
Alternate ID(s):
OSTI ID: 1529607
Report Number(s):
INL/JOU-19-52509-Rev002; 150501
Journal Information:
Journal of the Electrochemical Society, Vol. 166, Issue 10; ISSN 0013-4651
Publisher:
The Electrochemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 76 works
Citation information provided by
Web of Science

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  • Journal of Electrochemical Energy Conversion and Storage, Vol. 16, Issue 1 https://doi.org/10.1115/1.4040760
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Cited By (3)

In Situ Measurement of Lithium-Ion Cell Internal Temperatures during Extreme Fast Charging journal January 2019
Fast Charging of Li-Ion Cells: Part II. Nonlinear Contributions to Cell and Electrode Polarization journal January 2019
Electrochemical Quantification of Lithium Plating: Challenges and Considerations journal January 2019