Home > Publications database > A nonflammable diethyl ethylphosphonate-based electrolyte improved by synergistic effect of lithium difluoro(oxalato)borate and fluoroethylene carbonate > print

001     1019517
005     20240712113122.0
024 7 _ |a 10.1016/j.jpowsour.2023.233051
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024 7 _ |a 0378-7753
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024 7 _ |a 1873-2755
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024 7 _ |a 10.34734/FZJ-2023-05464
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037 _ _ |a FZJ-2023-05464
082 _ _ |a 620
100 1 _ |a Jiang, Lihua
|0 P:(DE-HGF)0
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245 _ _ |a A nonflammable diethyl ethylphosphonate-based electrolyte improved by synergistic effect of lithium difluoro(oxalato)borate and fluoroethylene carbonate
260 _ _ |a New York, NY [u.a.]
|c 2023
|b Elsevier
336 7 _ |a article
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336 7 _ |a ARTICLE
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336 7 _ |a Journal Article
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520 _ _ |a The vital physical and chemical properties of the lithium conducting salt, solvent/co-solvent and functionaladditive determine the overall properties and performance of the resulting electrolyte formulation. Explorationson right combinations of the carefully selected electrolyte components are expected to further balance theelectrochemical and safety performances of chosen electrolyte formulations in given cell chemistries. In thisstudy, a new nonaqueous aprotic electrolyte is designed by using lithium difluoro(oxalato)borate (LiODFB) asconducting salt, diethyl ethylphosphonate (DEEP) as solvent, and fluoroethylene carbonate (FEC) as co-solvent toachieve a nonflammable electrolyte formulation with competent electrochemical performance. The LiODFB andFEC are believed to take part in complex interfacial interactions with a synergistic effect. LiNi0.8Co0.1Mn0.1O2(NCM811)‖Li cells using the optimized electrolyte formulation of 1.3 M LiODFB/DEEP 30% FEC exhibits a stablelong-term cycling performance at 1.0 C with a reversible average specific discharge capacity of 169.5 mAh g􀀀 1during 100 cycles, which is comparable to cells using commercial electrolytes. Furthermore, the 1.3 M LiODFB/DEEP 30% FEC electrolyte shows good thermal stability and effectively reduces the heat generation duringthermal decomposition of NCM811 cathode. The results provide a good reference for the design of next generationof safe, nonflammable electrolytes for lithium-based battery application.
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700 1 _ |a Cheng, Yuan
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700 1 _ |a Wang, Shuping
|0 P:(DE-HGF)0
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|e Corresponding author
700 1 _ |a Cheng, Yifeng
|0 P:(DE-HGF)0
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700 1 _ |a Jin, Kaiqiang
|0 P:(DE-HGF)0
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700 1 _ |a Sun, Jinhua
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700 1 _ |a Winter, Martin
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700 1 _ |a Cekic-Laskovic, Isidora
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700 1 _ |a Wang, Qingsong
|0 0000-0002-6686-195X
|b 8
773 _ _ |a 10.1016/j.jpowsour.2023.233051
|g Vol. 570, p. 233051 -
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|t Journal of power sources
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856 4 _ |y OpenAccess
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913 1 _ |a DE-HGF
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