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

Research output: Contribution to journalArticle

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 (US)
JournalJoule
DOIs
StatePublished - 2019

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Modulation
Temperature
Solid electrolytes
Plating
Kinetics
Lithium-ion batteries
Ions
Battery electric vehicles

Cite this

@article{85652cdc6ca64f968df9938fa4c59dec,
title = "Asymmetric Temperature Modulation for Extreme Fast Charging of Lithium-Ion Batteries",
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.",
author = "Xiao-Guang Yang and Teng Liu and Yue Gao and Shanhai Ge and Yongjun Leng and Donghai Wang and Chao-Yang Wang",
year = "2019",
doi = "10.1016/j.joule.2019.09.021",
language = "English (US)",
journal = "Joule",
issn = "2542-4351",
publisher = "Cell Press",

}

TY - JOUR

T1 - Asymmetric Temperature Modulation for Extreme Fast Charging of Lithium-Ion Batteries

AU - Yang, Xiao-Guang

AU - Liu, Teng

AU - Gao, Yue

AU - Ge, Shanhai

AU - Leng, Yongjun

AU - Wang, Donghai

AU - Wang, Chao-Yang

PY - 2019

Y1 - 2019

N2 - 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.

AB - 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.

UR - https://linkinghub.elsevier.com/retrieve/pii/S2542435119304817

UR - http://www.mendeley.com/research/asymmetric-temperature-modulation-extreme-fast-charging-lithiumion-batteries

U2 - 10.1016/j.joule.2019.09.021

DO - 10.1016/j.joule.2019.09.021

M3 - Article

JO - Joule

JF - Joule

SN - 2542-4351

ER -