Lithium-ion batteries (LIBs) are the key technology for electric vehicle and energy storage systems [1]. A new generation of LIBs, with high cycling stability, safety and especially higher energy/power density, are required for automotive application [2]. In this contest, anode materials with large practical capacity [3], such as silicon (Si), and lithium-rich high voltage cathodes (above 4 V vs. Li + /Li°) [4] represent the best candidates as electrode materials. In the meantime, safer and more reliable electrolyte systems are required for overcoming the safety issue of the organic electrolytes. A promising strategy is represented using ionic liquids (ILs) as electrolyte components [5]. In this work different IL families, combining imidazolium and tetra-alkyl-ammonium cations with per(fluoroalkylsulfonyl)imide anions, were specifically designed, and investigated as electrolyte materials for safer high-energy density and high-voltage (> 4.5 V) Li-ion batteries. The compatibility of the developed electrolyte formulations towards silicon nanowire anodes and lithium-rich layered oxide (Li 1.2 Ni 0.2 Mn 0.6 O 2 ) cathodes were studied (in Li half-cells) through charge- discharge cycling, cyclic voltammetry and impedance spectroscopy. Acknowledgements The authors would like to acknowledge the financial support from the European Union within the Si-DRIVE project. This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No. 814464. [1] A. Barré, B. Deguilhem, S. Grolleau, M. Gérard, F. Suard, D. Riu, A review on lithium-ion battery ageing mechanisms and estimations for automotive applications, J Power Sources. 241 (2013). https://doi.org/10.1016/j.jpowsour.2013.05.040. [2] R. Schmuch, R. Wagner, G. Hörpel, T. Placke, M. Winter, Performance and cost of materials for lithium-based rechargeable automotive batteries, Nat Energy. 3 (2018). https://doi.org/10.1038/s41560-018-0107-2. [3] R.A. Huggins, Lithium alloy negative electrodes, J Power Sources. 81–82 (1999) 13–19. https://doi.org/10.1016/S0378-7753(99)00124-X. [4] N. Rapulenyane, E. Ferg, H. Luo, High-performance Li1.2Mn0.6Ni0.2O2 cathode materials prepared through a facile one-pot co-precipitation process for lithium ion batteries, J Alloys Compd. 762 (2018) 272–281. https://doi.org/10.1016/j.jallcom.2018.05.207. [5] G.B. Appetecchi, M. Montanino, S. Passerini, Ionic liquid-based electrolytes for high energy, safer lithium batteries, in: ACS Symposium Series, 2012: pp. 67–128. https://doi.org/10.1021/bk-2012- 1117.ch004.
Compatibility of ionic liquid electrolytes towards large-capacity, nanowire, silicon anodes and high-voltage, lithium-rich, nickel-manganese oxide cathodes / Maresca, G.; Di Schiavi, A.; Brutti, S.; Paolone, A.; Palumbo, O.; Fantini, S.; Lin, R.; Martin, P. A.; Choi, H.; Kuenzel, M.; Passerini, S.; Sankaran, A.; Geaney, H.; Ryan, K. M.; Appetecchi, G. B.. - (2023). (Intervento presentato al convegno Actea 2023 tenutosi a Frascati, Italy).
Compatibility of ionic liquid electrolytes towards large-capacity, nanowire, silicon anodes and high-voltage, lithium-rich, nickel-manganese oxide cathodes.
G. Maresca
;A. Di Schiavi;S. Brutti;A. Paolone;O. Palumbo;
2023
Abstract
Lithium-ion batteries (LIBs) are the key technology for electric vehicle and energy storage systems [1]. A new generation of LIBs, with high cycling stability, safety and especially higher energy/power density, are required for automotive application [2]. In this contest, anode materials with large practical capacity [3], such as silicon (Si), and lithium-rich high voltage cathodes (above 4 V vs. Li + /Li°) [4] represent the best candidates as electrode materials. In the meantime, safer and more reliable electrolyte systems are required for overcoming the safety issue of the organic electrolytes. A promising strategy is represented using ionic liquids (ILs) as electrolyte components [5]. In this work different IL families, combining imidazolium and tetra-alkyl-ammonium cations with per(fluoroalkylsulfonyl)imide anions, were specifically designed, and investigated as electrolyte materials for safer high-energy density and high-voltage (> 4.5 V) Li-ion batteries. The compatibility of the developed electrolyte formulations towards silicon nanowire anodes and lithium-rich layered oxide (Li 1.2 Ni 0.2 Mn 0.6 O 2 ) cathodes were studied (in Li half-cells) through charge- discharge cycling, cyclic voltammetry and impedance spectroscopy. Acknowledgements The authors would like to acknowledge the financial support from the European Union within the Si-DRIVE project. This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No. 814464. [1] A. Barré, B. Deguilhem, S. Grolleau, M. Gérard, F. Suard, D. Riu, A review on lithium-ion battery ageing mechanisms and estimations for automotive applications, J Power Sources. 241 (2013). https://doi.org/10.1016/j.jpowsour.2013.05.040. [2] R. Schmuch, R. Wagner, G. Hörpel, T. Placke, M. Winter, Performance and cost of materials for lithium-based rechargeable automotive batteries, Nat Energy. 3 (2018). https://doi.org/10.1038/s41560-018-0107-2. [3] R.A. Huggins, Lithium alloy negative electrodes, J Power Sources. 81–82 (1999) 13–19. https://doi.org/10.1016/S0378-7753(99)00124-X. [4] N. Rapulenyane, E. Ferg, H. Luo, High-performance Li1.2Mn0.6Ni0.2O2 cathode materials prepared through a facile one-pot co-precipitation process for lithium ion batteries, J Alloys Compd. 762 (2018) 272–281. https://doi.org/10.1016/j.jallcom.2018.05.207. [5] G.B. Appetecchi, M. Montanino, S. Passerini, Ionic liquid-based electrolytes for high energy, safer lithium batteries, in: ACS Symposium Series, 2012: pp. 67–128. https://doi.org/10.1021/bk-2012- 1117.ch004.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
