Operando detection of Li plating during fast charging of Li-ion batteries using incremental capacity analysis
Journal Article
·
· Journal of Power Sources
- Univ. of Michigan, Ann Arbor, MI (United States); University of Michigan
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Univ. of Michigan, Ann Arbor, MI (United States)
A major challenge that limits fast charging of Li-ion batteries is lithium (Li) plating on the graphite electrode. Furthermore, it remains challenging to detect and diagnose Li plating in operando during charging. In this work, incremental capacity (IC) analysis is applied while charging graphite-NMC pouch cells over a range of rates from C/2 to 4C. Three-electrode pouch cell measurements and post-mortem SEM imaging was performed to demonstrate that the onset of Li plating is correlated with a specific IC peak. IC analysis was also applied to study the fast-charge performance of multi-layer pouch cells with 3-D anode architectures. The results demonstrate that: 1) IC curves have a characteristic peak that is an indicator of Li plating during fast charging, which grows in magnitude as charging rate increases; 2) the plating IC peak correlates with the voltage minimum of the graphite anode, indicating a transition from intercalation to plating; 3) the plating IC peak is sensitive to small amounts of Li plating; 4) IC analysis can be applied to study Li plating in novel cell architectures; 5) the plating IC peak evolves during extended fast-charge cycling, which is a result of reduced Li plating as the Li inventory decreases.
- Research Organization:
- Univ. of Michigan, Ann Arbor, MI (United States)
- Sponsoring Organization:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE)
- Grant/Contract Number:
- EE0008362
- OSTI ID:
- 1960222
- Alternate ID(s):
- OSTI ID: 1870348
- Journal Information:
- Journal of Power Sources, Journal Name: Journal of Power Sources Vol. 539; ISSN 0378-7753
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Similar Records
Operando video microscopy of Li plating and re-intercalation on graphite anodes during fast charging
Enabling 6C Fast Charging of Li–Ion Batteries with Graphite/Hard Carbon Hybrid Anodes
Journal Article
·
Sun Oct 17 20:00:00 EDT 2021
· Journal of Materials Chemistry. A
·
OSTI ID:1924793
Enabling 6C Fast Charging of Li–Ion Batteries with Graphite/Hard Carbon Hybrid Anodes
Journal Article
·
Sun Dec 27 19:00:00 EST 2020
· Advanced Energy Materials
·
OSTI ID:1924792