Butyronitrile-Based Electrolytes for Fast Charging of Lithium-Ion Batteries

After determining the optimum composition of the butyronitrile: ethylene carbonate: fluoroethylene carbonate (BN:EC:FEC) solvent/co-solvent/additive mixture, the resulting electrolyte formulation (1M LiPF<sub>6</sub> in BN:EC (9:1) + 3% FEC) was evaluated in terms of ionic conductivity a...

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Main Authors: Peter Hilbig, Lukas Ibing, Martin Winter, Isidora Cekic-Laskovic
Format: Article
Language:English
Published: MDPI AG 2019-07-01
Series:Energies
Subjects:
Online Access:https://www.mdpi.com/1996-1073/12/15/2869
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author Peter Hilbig
Lukas Ibing
Martin Winter
Isidora Cekic-Laskovic
author_facet Peter Hilbig
Lukas Ibing
Martin Winter
Isidora Cekic-Laskovic
author_sort Peter Hilbig
collection DOAJ
description After determining the optimum composition of the butyronitrile: ethylene carbonate: fluoroethylene carbonate (BN:EC:FEC) solvent/co-solvent/additive mixture, the resulting electrolyte formulation (1M LiPF<sub>6</sub> in BN:EC (9:1) + 3% FEC) was evaluated in terms of ionic conductivity and the electrochemical stability window, as well as galvanostatic cycling performance in NMC/graphite cells. This cell chemistry results in remarkable fast charging, required, for instance, for automotive applications. In addition, a good long-term cycling behavior lasts for 1000 charge/discharge cycles and improved ionic conductivity compared to the benchmark counterpart was achieved. XPS sputter depth profiling analysis proved the beneficial behavior of the tuned BN-based electrolyte on the graphite surface, by confirming the formation of an effective solid electrolyte interphase (SEI).
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spelling doaj.art-ac17145635ba4c66a2e56b2c0e6c7dcc2022-12-22T02:53:06ZengMDPI AGEnergies1996-10732019-07-011215286910.3390/en12152869en12152869Butyronitrile-Based Electrolytes for Fast Charging of Lithium-Ion BatteriesPeter Hilbig0Lukas Ibing1Martin Winter2Isidora Cekic-Laskovic3MEET Battery Research Center/Institute of Physical Chemistry, University of Münster, Corrensstrasse 46, 48149 Münster, GermanyMEET Battery Research Center/Institute of Physical Chemistry, University of Münster, Corrensstrasse 46, 48149 Münster, GermanyMEET Battery Research Center/Institute of Physical Chemistry, University of Münster, Corrensstrasse 46, 48149 Münster, GermanyHelmholtz-Institute Münster, IEK-12, Forschungszentrum Jülich GmbH, Corrensstrasse 46, 48149 Münster, GermanyAfter determining the optimum composition of the butyronitrile: ethylene carbonate: fluoroethylene carbonate (BN:EC:FEC) solvent/co-solvent/additive mixture, the resulting electrolyte formulation (1M LiPF<sub>6</sub> in BN:EC (9:1) + 3% FEC) was evaluated in terms of ionic conductivity and the electrochemical stability window, as well as galvanostatic cycling performance in NMC/graphite cells. This cell chemistry results in remarkable fast charging, required, for instance, for automotive applications. In addition, a good long-term cycling behavior lasts for 1000 charge/discharge cycles and improved ionic conductivity compared to the benchmark counterpart was achieved. XPS sputter depth profiling analysis proved the beneficial behavior of the tuned BN-based electrolyte on the graphite surface, by confirming the formation of an effective solid electrolyte interphase (SEI).https://www.mdpi.com/1996-1073/12/15/2869lithium-ion batteriesnon-aqueous electrolytenitrile-based solventsbutyronitrileSEI forming additivesfast charging
spellingShingle Peter Hilbig
Lukas Ibing
Martin Winter
Isidora Cekic-Laskovic
Butyronitrile-Based Electrolytes for Fast Charging of Lithium-Ion Batteries
Energies
lithium-ion batteries
non-aqueous electrolyte
nitrile-based solvents
butyronitrile
SEI forming additives
fast charging
title Butyronitrile-Based Electrolytes for Fast Charging of Lithium-Ion Batteries
title_full Butyronitrile-Based Electrolytes for Fast Charging of Lithium-Ion Batteries
title_fullStr Butyronitrile-Based Electrolytes for Fast Charging of Lithium-Ion Batteries
title_full_unstemmed Butyronitrile-Based Electrolytes for Fast Charging of Lithium-Ion Batteries
title_short Butyronitrile-Based Electrolytes for Fast Charging of Lithium-Ion Batteries
title_sort butyronitrile based electrolytes for fast charging of lithium ion batteries
topic lithium-ion batteries
non-aqueous electrolyte
nitrile-based solvents
butyronitrile
SEI forming additives
fast charging
url https://www.mdpi.com/1996-1073/12/15/2869
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