Lithium-ion battery functionality over broad operating conditions via local high concentration fluorinated ester electrolytes

Calvin D. Quilty; Edelmy J. Marin Bernardez; Andrew Nicoll; MD Jamil Hossain; Arun Kingan; David J. Arnot; Hafsa A. Mohamed; Ciara L. O'Connor; Xiao Tong; Cherno Jaye; Daniel A. Fischer; Lei Wang; Yue Qi; Esther S. Takeuchi; Amy C. Marschilok; Shan Yan; David C. Bock; Kenneth J. Takeuchi

doi:10.1039/D3LF00259D

Lithium-ion battery functionality over broad operating conditions via local high concentration fluorinated ester electrolytes†

Calvin D. Quilty,^ab Edelmy J. Marin Bernardez,^ab Andrew Nicoll,^ab MD Jamil Hossain,

^c Arun Kingan,^ab David J. Arnot,^bd Hafsa A. Mohamed,^ef Ciara L. O'Connor,^eg Xiao Tong,

^h Cherno Jaye,ⁱ Daniel A. Fischer,ⁱ Lei Wang,

^bj Yue Qi,

^c Esther S. Takeuchi,

^abdj Amy C. Marschilok,

^abdj Shan Yan,

^bj David C. Bock

*^bj and Kenneth J. Takeuchi

*^abdj

Author affiliations

* Corresponding authors

^a Department of Chemistry, Stony Brook University, Stony Brook, NY, USA
E-mail: kenneth.takeuchi.1@stonybrook.edu

^b Institute of Energy: Sustainability, Environment, and Equity (I:SEE), Stony Brook University, Stony Brook, NY, USA

^c School of Engineering, Brown University, Providence, RI, USA

^d Department of Materials Science and Chemical Engineering, Stony Brook University, Stony Brook, NY, USA

^e Science Undergraduate Laboratory Internship (SULI) Program, Brookhaven National Laboratory, Upton, NY, USA

^f Department of Chemistry, University of Rochester, Rochester, NY 14627, USA

^g Department of Chemistry, The College of Wooster, Wooster, OH 44691, USA

^h Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, NY, USA

ⁱ Material Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA

^j Interdisciplinary Science Department, Brookhaven National Laboratory, Upton, NY, USA
E-mail: dbock@bnl.gov

Abstract

Facilitating widespread adoption of electric vehicles will require next-generation battery systems that can operate reliably over a large temperature range, at high operating voltage, and under fast charging rates. Herein, a novel class of nonflammable fluorinated ester-based local high concentration electrolytes (LHCEs) are described. When cycled in commercially relevant graphite/LiNi_0.8Mn_0.1Co_0.1O₂ (NMC811) pouch cells, these electrolytes demonstrate improved capacity retention compared to carbonate-based electrolytes under multiple usage conditions including high voltage (4.5 V), fast charge (4C, 15 minutes), and low temperature (−20 °C) without sacrificing capacity retention at elevated temperature (40 °C). Low carbon, high fluoride cathode electrolyte interphases formed by the LHCE system yield a significant reduction in charge transfer impedance during cycling and contribute to capacity retention. These results demonstrate that using fluorinated esters in a LHCE modality enables creation of a new class of nonflammable electrolytes that can successfully operate over broad operating conditions.

RSC Applied Interfaces

Lithium-ion battery functionality over broad operating conditions via local high concentration fluorinated ester electrolytes†

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Lithium-ion battery functionality over broad operating conditions via local high concentration fluorinated ester electrolytes

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