New generation lithium batteries require better performances, improved safety, and sustainability. Better performances can be obtained with lithium anodes and high-voltage cathodes, which in turn pose more pressure on the electrolyte stability, which is mandatory for safety. Deep Eutectic Solvents (DESs) are promising components for safer and more environmentally sustainable electrolytes. We investigate the physico-chemical properties of DESs made with 2,2,2-trifluoroacetamide (TFA) and LiPF6. The best composition is tested against Li metal and two cathode active materials: LiFePO4 (LFP) and high voltage LiNi1-x-yMnxCoyO2 (NMC). We obtain good electrochemical performance in a Li-metal cell with LFP. Accelerated rate calorimetry shows improved thermal stability of the Li|DES|NMC cell with respect to a commercial liquid electrolyte.

Mezzomo, L., Pianta, N., Ostroman, I., Aloni, N., Golodnitsky, D., Peled, E., et al. (2023). Deep eutectic solvent electrolytes based on trifluoroacetamide and LiPF6 for Li-metal batteries. JOURNAL OF POWER SOURCES, 561(30 March 2023) [10.1016/j.jpowsour.2023.232746].

Deep eutectic solvent electrolytes based on trifluoroacetamide and LiPF6 for Li-metal batteries

Mezzomo L.
Primo
;
Pianta N.
Secondo
;
Ostroman I.;Mustarelli P.
;
Ruffo R.
Ultimo
2023

Abstract

New generation lithium batteries require better performances, improved safety, and sustainability. Better performances can be obtained with lithium anodes and high-voltage cathodes, which in turn pose more pressure on the electrolyte stability, which is mandatory for safety. Deep Eutectic Solvents (DESs) are promising components for safer and more environmentally sustainable electrolytes. We investigate the physico-chemical properties of DESs made with 2,2,2-trifluoroacetamide (TFA) and LiPF6. The best composition is tested against Li metal and two cathode active materials: LiFePO4 (LFP) and high voltage LiNi1-x-yMnxCoyO2 (NMC). We obtain good electrochemical performance in a Li-metal cell with LFP. Accelerated rate calorimetry shows improved thermal stability of the Li|DES|NMC cell with respect to a commercial liquid electrolyte.
Articolo in rivista - Articolo scientifico
Accelerated rate calorimetry; Deep eutectic solvents; Electrolyte; LiPF6; Lithium metal batteries;
English
31-gen-2023
2023
561
30 March 2023
232746
open
Mezzomo, L., Pianta, N., Ostroman, I., Aloni, N., Golodnitsky, D., Peled, E., et al. (2023). Deep eutectic solvent electrolytes based on trifluoroacetamide and LiPF6 for Li-metal batteries. JOURNAL OF POWER SOURCES, 561(30 March 2023) [10.1016/j.jpowsour.2023.232746].
File in questo prodotto:
File Dimensione Formato  
Mezzomo-2023-J Power Sources-preprint.pdf

accesso aperto

Descrizione: Research article
Tipologia di allegato: Submitted Version (Pre-print)
Licenza: Altro
Dimensione 771.58 kB
Formato Adobe PDF
771.58 kB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/403677
Citazioni
  • Scopus 3
  • ???jsp.display-item.citation.isi??? 3
Social impact