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Title: A Novel High‐Performance Electrolyte for Extreme Fast Charging in Pilot Scale Lithium‐Ion Pouch Cells
Abstract Realizing extreme fast charging (XFC) in lithium‐ion batteries for electric vehicles is still challenging due to the insufficient lithium‐ion transport kinetics, especially in the electrolyte. Herein, a novel high‐performance electrolyte (HPE) consisting of lithium bis(fluorosulfonyl)imide (LiFSI), lithium hexafluorophosphate (LiPF6) and carbonates is proposed and tested in pilot‐scale, 2‐Ah pouch cells. Moreover, the origin of improved electrochemical performance is comprehensively studied via various characterizations, suggesting that the proposed HPE exhibits high ionic conductivity and excellent electrochemical stability at high charging rate of 6‐C. Therefore, the HPE‐based pouch cells deliver improved discharge specific capacity and excellent long‐term cyclability up to 1500 cycles under XFC conditions, which is superior to the conventional state‐of‐the‐art baseline electrolyte.  more » « less
Award ID(s):
2301719
PAR ID:
10511554
Author(s) / Creator(s):
; ; ; ; ; ; ; ; ; ; ;
Publisher / Repository:
European Chemical Societies Publishing
Date Published:
Journal Name:
Batteries & Supercaps
Volume:
6
Issue:
10
ISSN:
2566-6223
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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