Asymmetric Temperature Modulation for Extreme Fast Charging of Lithium-Ion Batteries

Xiao Guang Yang, Teng Liu, Yue Gao, Shanhai Ge, Yongjun Leng, Donghai Wang, Chao Yang Wang*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

275 Citations (Scopus)

Abstract

Adding a 200-mile range in 10 min, so-called extreme fast charging (XFC), is the key to mainstream adoption of battery electric vehicles (BEVs). Here, we present an asymmetric temperature modulation (ATM) method that, on one hand, charges a Li-ion cell at an elevated temperature of 60°C to eliminate Li plating and, on the other, limits the exposure time at 60°C to only ∼10 min per cycle, or 0.1% of the lifetime of a BEV, to prevent severe solid-electrolyte-interphase growth. The asymmetric temperature between charge and discharge opens a new path to enhance kinetics and transport during charging while still achieving long life. We show that a 9.5-Ah 170-Wh/kg cell sustained 1,700 XFC cycles (6 C charge to 80% state of charge) at 20% capacity loss with the ATM, compared to 60 cycles for a control cell, and that a 209-Wh/kg BEV cell retained 91.7% capacity after 2,500 XFC cycles.

Original languageEnglish
Pages (from-to)3002-3019
Number of pages18
JournalJoule
Volume3
Issue number12
DOIs
Publication statusPublished - 18 Dec 2019
Externally publishedYes

Keywords

  • battery degradation
  • extreme fast charging
  • high energy battery
  • high temperature
  • lithium plating
  • lithium-ion battery
  • solid-electrolyte interphase
  • thermal management

Fingerprint

Dive into the research topics of 'Asymmetric Temperature Modulation for Extreme Fast Charging of Lithium-Ion Batteries'. Together they form a unique fingerprint.

Cite this

Yang, X. G., Liu, T., Gao, Y., Ge, S., Leng, Y., Wang, D., & Wang, C. Y. (2019). Asymmetric Temperature Modulation for Extreme Fast Charging of Lithium-Ion Batteries. Joule, 3(12), 3002-3019. https://doi.org/10.1016/j.joule.2019.09.021