Enabling fast discharge of Li-ion batteries via electrolyte formulations for urban air mobility applications

Bisht, Anuj; Dixit, Marm; Amin, Ruhul; Essehli, Rachid; Abouimrane, Ali; Kweon, Chol-Bum M.; Belharouak, Ilias

doi:10.1016/j.jpowsour.2024.235464

Enabling fast discharge of Li-ion batteries via electrolyte formulations for urban air mobility applications

Journal Article · Thu Sep 19 00:00:00 EDT 2024 · Journal of Power Sources

DOI:https://doi.org/10.1016/j.jpowsour.2024.235464· OSTI ID:2448186

^[1]; ^[1]; Amin, Ruhul ^[1]; Essehli, Rachid ^[1]; ^[1]; ^[2]; ^[1]

Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Army Research Lab., Aberdeen Proving Ground, MD (United States)

High-power discharge requirements are critical for lithium-ion batteries (LIBs) used in electric Vertical Takeoff and Landing (eVTOL) vehicles that are increasingly considered in urban mobility. This investigation places a particular emphasis on understanding the impact of electrolytes on discharge processes and rate capability. We aim to compare the discharge behavior of LiBs using a conventional electrolyte (Gen 2: 1.2 M LiPF₆ in EC:EMC) and the dual salt LiTFSI-LiBOB-based electrolyte. Here we carefully examine the profiles of charging and discharging, the behavior during extended cycles, impedance spectroscopy results, and the characteristics of the electrode surface. Our research findings demonstrate the complex relationship between the composition of electrolytes and the specific high-power discharge requirements of electric vertical takeoff and landing (eVTOL) systems. This research highlights the importance of customizing electrolyte compositions to optimize energy storage density while simultaneously enabling higher power extraction to enhance performance in short-range electric aviation.

View Accepted Manuscript (DOE)

Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Organization:: US Army Research Laboratory (USARL); USDOE; USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: AC05-00OR22725

OSTI ID:: 2448186

Alternate ID(s):: OSTI ID: 2447660

Journal Information:: Journal of Power Sources, Journal Name: Journal of Power Sources Vol. 623; ISSN 0378-7753

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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Battery Electrolyte Design for Electric Vertical Takeoff and Landing (eVTOL) Platforms

Journal Article · Mon May 13 20:00:00 EDT 2024 · Advanced Energy Materials · OSTI ID:2378103

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25 ENERGY STORAGE
Electrolyte formulations
Fast discharge
Lithium-ion batteries
Rate capability
Urban air mobility
eVTOL

Enabling fast discharge of Li-ion batteries via electrolyte formulations for urban air mobility applications

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