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

By X. Yang, Teng Liu, Yue Gao, S. Ge, Y. Leng, Donghai Wang, Chaoyang Wang. 2019

305 citations recorded by the source corpus.

Summary 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.

Subfields: Automotive Engineering, Electrical and Electronic Engineering

View Paper: https://www.semanticscholar.org/paper/e525f23f644fccd25eeb716abab8b9633f7dc02e

How researchers see this paper

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In Automotive Engineering

1. Xianke Lin
2. Kavian Khosravinia
3. Wei Dang Lu
4. Xiaosong Hu
5. Ju Li

In Electrical and Electronic Engineering

1. Xianke Lin
2. Kavian Khosravinia
3. Wei Dang Lu
4. Xiaosong Hu
5. Ju Li

Citations in the corpus

• Lithium Plating Mechanism, Detection, and Mitigation in Lithium-Ion Batteries (2021, background): “They showed that lithium plating may be prevented by a short-time exposure to 60C (10 minutes per cycle) [67].”