Polymer electrolytes were prepared using 1 M LiPF6 in ethylene carbonate-dimethyl carbonate 1:1 wt/wt (LP 30 SelectiLyte (TM): LP 30 henceforth), N-n-butyl-N-methylpyrrolidinium hexafluorophosphate ([Py-14]PF6), and poly(vinylidenefluoride-co-hexafluoropropylene) (PVdF-HFP). To determine adequate composition of liquid electrolyte, we investigated the effect of the ratio of [Py-14]PF6 to LP 30, in terms of thermal stability, ionic conductivity and electrochemical stability. The solution, LP 30 with 30 wt% [Py-14] PF6, gave better properties compared to pure LP 30 and other mixtures examined in this study. Then this was used for galvanostatic charge-discharge tests of a lithium cell. The cell, with the chosen electrolyte solution, demonstrated reversible capacity reaching the theoretical values, when Li metal was combined with LiFePO4 or Li4Ti5O12 electrode. A polymer membrane was prepared by combining the chosen solution with PVdF-HFP matrix. The ionic conductivity of this membrane was 4 x 10(-4) S cm(-1) at room temperature. Furthermore, the polymer electrolyte displayed reasonable thermal stability, reflecting the properties of [Py-14]PF6 in improving the performance of the polymer electrolyte. (C) 2013 Elsevier B.V. All rights reserved.

N-n-Butyl-N-methylpyrrolidinium hexafluorophosphate-added electrolyte solutions and membranes for lithium-secondary batteries / Tsurumaki, Akiko; Navarra, MARIA ASSUNTA; Panero, Stefania; Scrosati, Bruno; Hiroyuki, Ohno. - In: JOURNAL OF POWER SOURCES. - ISSN 0378-7753. - STAMPA. - 233:(2013), pp. 104-109. [10.1016/j.jpowsour.2013.01.131]

N-n-Butyl-N-methylpyrrolidinium hexafluorophosphate-added electrolyte solutions and membranes for lithium-secondary batteries

TSURUMAKI, AKIKO;NAVARRA, MARIA ASSUNTA;PANERO, Stefania;SCROSATI, Bruno;
2013

Abstract

Polymer electrolytes were prepared using 1 M LiPF6 in ethylene carbonate-dimethyl carbonate 1:1 wt/wt (LP 30 SelectiLyte (TM): LP 30 henceforth), N-n-butyl-N-methylpyrrolidinium hexafluorophosphate ([Py-14]PF6), and poly(vinylidenefluoride-co-hexafluoropropylene) (PVdF-HFP). To determine adequate composition of liquid electrolyte, we investigated the effect of the ratio of [Py-14]PF6 to LP 30, in terms of thermal stability, ionic conductivity and electrochemical stability. The solution, LP 30 with 30 wt% [Py-14] PF6, gave better properties compared to pure LP 30 and other mixtures examined in this study. Then this was used for galvanostatic charge-discharge tests of a lithium cell. The cell, with the chosen electrolyte solution, demonstrated reversible capacity reaching the theoretical values, when Li metal was combined with LiFePO4 or Li4Ti5O12 electrode. A polymer membrane was prepared by combining the chosen solution with PVdF-HFP matrix. The ionic conductivity of this membrane was 4 x 10(-4) S cm(-1) at room temperature. Furthermore, the polymer electrolyte displayed reasonable thermal stability, reflecting the properties of [Py-14]PF6 in improving the performance of the polymer electrolyte. (C) 2013 Elsevier B.V. All rights reserved.
2013
ionic conductivity; ionic liquid; lipf6 in ec-dmc; lithium ion battery; polymer electrolyte; thermal stability
01 Pubblicazione su rivista::01a Articolo in rivista
N-n-Butyl-N-methylpyrrolidinium hexafluorophosphate-added electrolyte solutions and membranes for lithium-secondary batteries / Tsurumaki, Akiko; Navarra, MARIA ASSUNTA; Panero, Stefania; Scrosati, Bruno; Hiroyuki, Ohno. - In: JOURNAL OF POWER SOURCES. - ISSN 0378-7753. - STAMPA. - 233:(2013), pp. 104-109. [10.1016/j.jpowsour.2013.01.131]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/509811
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