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Gel electrolytes based on ionic liquids for advanced lithium polymer batteries
被引:74
作者:
Hofmann, Andreas
[1
]
Schulz, Michael
[1
,2
]
Hanemann, Thomas
[1
,2
]
机构:
[1] KIT, IAM WPT, D-76344 Eggenstein Leopoldshafen, Germany
[2] Univ Freiburg, Inst Mikrosyst Tech, D-79110 Freiburg, Germany
关键词:
Ionic liquid;
Gel polymer electrolyte;
Lithium ion battery;
NMC;
LI-ION;
VINYLENE CARBONATE;
PVDF-HFP;
THERMAL-BEHAVIOR;
PERFORMANCE;
CHALLENGES;
ELECTRODES;
ADDITIVES;
CHEMISTRY;
MEMBRANES;
D O I:
10.1016/j.electacta.2012.10.144
中图分类号:
O646 [电化学、电解、磁化学];
学科分类号:
081704 ;
摘要:
A new ionic liquid-based polymer gel electrolyte for lithium ion batteries is prepared by combining N-methyl-N-propylpyrrolidinium bis(trifluoromethylsulfonyl)azanide, organic carbonates, lithium bis(trifluoromethylsulfonyl) azanide, and poly(vinylidene fluoride-co-hexafluoropropylene). The conductivities of the gel electrolytes at room temperature are about 1-2 mS/cm. It is shown that the polymer gel electrolytes work effectively with a graphite anode and a LiCo1/3Mn1/3Ni1/3O2 cathode. Further it is proven that the addition of vinylene carbonate and 4-vinylpyridine considerably improves the cell performance. (C) 2012 Elsevier Ltd. All rights reserved.
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页码:823 / 831
页数:9
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