Stable cycling of lithium metal electrode in nanocomposite solid polymer electrolytes with lithium bis (fluorosulfonyl)imide

Xabier Judez , Michał Piszcz , Estibaliz Coya , Chunmei Li , Itziar Aldalur , Uxue Oteo , Yan Zhang , Wei Zhang , Lide M. Rodriguez-Martinez , Heng Zhang , Michel Armand

Abstract

Nanocomposite solid polymer electrolytes (NSPEs) comprising lithium salt based on two representative sulfonylimide anions (i.e., bis(fluorosulfonyl)imide ([N(SO2F)2]−, FSI−) and bis(trifluoromethanesulfonyl)imide ([N(SO2CF3)2]−, TFSI−)) have been prepared by simply dissolving the corresponding lithium salt in poly(ethylene oxide) matrix in the presence of inert nano-sized Al2O3 fillers. The physicochemical and electrochemical properties of the FSI- and TFSI-based NSPEs are investigated, in terms of phase transition, ion transport behavior, chemical and electrochemical compatibility with Li metal. With the addition of nano-sized Al2O3 fillers, a significant improvement in chemical and electrochemical compatibility with Li metal has been observed in both the FSI- and TFSI-based NSPEs. Particularly, the symmetric cell using the FSI-based NSPE can be continuously cycled for > 1000 h at 70 °C. The Li | LiFePO4 cell with the FSI-based NSPEs shows good cycling stability and capacity retention. These promising results make them attractive electrolytes for safe and stable rechargeable Li metal batteries.
Author Xabier Judez
Xabier Judez,,
-
, Michał Piszcz (FC / CICSST)
Michał Piszcz,,
- Chair Of Inorganic Chemistry And Solid State Technology
, Estibaliz Coya
Estibaliz Coya,,
-
, Chunmei Li
Chunmei Li,,
-
, Itziar Aldalur
Itziar Aldalur,,
-
, Uxue Oteo
Uxue Oteo,,
-
, Yan Zhang
Yan Zhang,,
-
, Wei Zhang
Wei Zhang,,
-
, Lide M. Rodriguez-Martinez
Lide M. Rodriguez-Martinez,,
-
, Heng Zhang
Heng Zhang,,
-
et al.`
Journal seriesSolid State Ionics, ISSN 0167-2738, (A 30 pkt)
Issue year2018
Vol318
Pages95-101
Publication size in sheets0.5
Keywords in Englishsolid polymer electrolytes, nanocomposite material, lithium bis(fluorosulfonyl)imide, lithium bis(trifluoromethanesulfonyl)imide, lithium metal batteries
DOIDOI:10.1016/j.ssi.2017.07.021
URL https://www.sciencedirect.com/science/article/pii/S0167273817301157?via%3Dihub
Languageen angielski
File
1-s2.0-S0167273817301157-main.pdf 1.15 MB
Not used for evaluationyes
Score (nominal)35
ScoreMinisterial score = 30.0, 10-08-2018, ArticleFromJournal
Ministerial score (2013-2016) = 35.0, 10-08-2018, ArticleFromJournal
Publication indicators WoS Impact Factor: 2016 = 2.354 (2) - 2016=2.438 (5)
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