Fluorinated Co-Solvents Enable Excellent Performances of Practical Cells Comprising LixSiO-Graphite Composite Anodes and LiNi 0.89 Co 0.05 Mn 0.05 Al 0.01 O 2 (NCMA) Cathodes.

Autor: Vangapally N; Department of Chemistry and Institute of Nanotechnology and Advanced Materials (BINA), Bar-Ilan University, INIES - Israel National Institute for Energy Storage, Ramat-Gan, 5290002, Israel., Lusztig D; Department of Chemistry and Institute of Nanotechnology and Advanced Materials (BINA), Bar-Ilan University, INIES - Israel National Institute for Energy Storage, Ramat-Gan, 5290002, Israel., Rathod S; Department of Chemistry and Institute of Nanotechnology and Advanced Materials (BINA), Bar-Ilan University, INIES - Israel National Institute for Energy Storage, Ramat-Gan, 5290002, Israel., Bano A; Department of Chemistry and Institute of Nanotechnology and Advanced Materials (BINA), Bar-Ilan University, INIES - Israel National Institute for Energy Storage, Ramat-Gan, 5290002, Israel., Scalar H; Department of Chemistry and Institute of Nanotechnology and Advanced Materials (BINA), Bar-Ilan University, INIES - Israel National Institute for Energy Storage, Ramat-Gan, 5290002, Israel., Akella SH; Department of Chemistry and Institute of Nanotechnology and Advanced Materials (BINA), Bar-Ilan University, INIES - Israel National Institute for Energy Storage, Ramat-Gan, 5290002, Israel., Noked M; Department of Chemistry and Institute of Nanotechnology and Advanced Materials (BINA), Bar-Ilan University, INIES - Israel National Institute for Energy Storage, Ramat-Gan, 5290002, Israel., Major DT; Department of Chemistry and Institute of Nanotechnology and Advanced Materials (BINA), Bar-Ilan University, INIES - Israel National Institute for Energy Storage, Ramat-Gan, 5290002, Israel., Halalay IC; Battery Cell Systems Research Lab, General Motors, Warren, Michigan, MI 48092, USA., Sriramulu S; Orbia Fluorinated Solutions (Koura), Mexico, MA 0251, USA., Luski S; Department of Chemistry and Institute of Nanotechnology and Advanced Materials (BINA), Bar-Ilan University, INIES - Israel National Institute for Energy Storage, Ramat-Gan, 5290002, Israel., Aurbach D; Department of Chemistry and Institute of Nanotechnology and Advanced Materials (BINA), Bar-Ilan University, INIES - Israel National Institute for Energy Storage, Ramat-Gan, 5290002, Israel.
Jazyk: angličtina
Zdroj: Small (Weinheim an der Bergstrasse, Germany) [Small] 2024 Oct; Vol. 20 (43), pp. e2403694. Date of Electronic Publication: 2024 Jun 25.
DOI: 10.1002/smll.202403694
Abstrakt: Li-ion batteries based on high specific capacity LixSiO-Graphite anodes and LiNi 0.89 Co 0.05 Mn 0.05 Al 0.01 O 2 (NCMA) cathodes may have numerous practical applications owing to high energy density without a necessary compromise on safety. SiO, which is an attractive Li insertion anode material, offers more cycling stability than Si and a higher capacity than graphite. Therefore, a new trend has emerged for developing composite C-Si anodes, possessing the excellent cyclability of graphite coupled with high capacity SiO. The composite structure described herein prevents the volume expansion of SiO and maintains the structural integrity during prolonged cycling. However, graphite electrodes suffer from exfoliation in propylene carbonate (PC) based electrolyte solutions, which avoids well known safety benefits related to a possible use of PC based electrolyte solutions in all kinds of Li batteries. Herein, it is reported that trifluoro propylene carbonate (TFPC) is compatible with graphite anodes. New electrolyte formulations are developed and tested containing fluorinated co-solvents and compared the performance of several electrolyte solutions, including conventional alkyl carbonates-based solutions in full Li-ion cells, which included LixSiO-Graphite anodes and LiNi 0.89 Co 0.05 Mn 0.05 Al 0.01 O 2 (NCMA) cathodes. Cells with new electrolyte solutions developed herein demonstrated nearly twice capacity retention in prolonged cycling experiments compared to similar reference cells containing conventional electrolyte solutions.
(© 2024 Wiley‐VCH GmbH.)
Databáze: MEDLINE
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