Mixtures of protic ionic liquids and propylene carbonate as advanced electrolytes for lithium-ion batteries

被引：62
作者：
Vogl, T.
Menne, S.
Balducci, A. [1 ]
机构：
[1] Univ Munster, Inst Phys Chem, D-48149 Munster, Germany
来源：
PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 2014年 / 16卷 / 45期
关键词：
DOUBLE-LAYER CAPACITORS; AL CURRENT COLLECTOR; ANODIC BEHAVIOR; PERFLUOROALKYLSULFONYL IMIDES; MOLTEN-SALTS; ALUMINUM; SAFE; BIS(TRIFLUOROMETHANESULFONYL)IMIDE; COMBINATION; PERFORMANCE;
D O I：
10.1039/c4cp03830d
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
In this study we investigated the chemical-physical properties of mixtures containing the protic ionic liquid (PIL) N-butyl-pyrrolidinium bis(trifluoromethanesulfonyl) imide (PYRH4TFSI), propylene carbonate (PC) and lithium bis(trifluoromethanesulfonyl) imide (LiTFSI) in view of their use as electrolytes for lithium-ion batteries (LIBs). We showed that these electrolytic solutions might display conductivity and viscosity comparable to those of conventional electrolytes. Depending on the amount of PIL present inside the mixtures, such mixtures might also display the ability to suppress the anodic dissolution of Al. Furthermore, we showed that the coordination of lithium ions by TFSI in PIL-PC mixtures appears to be different than the one observed for mixtures of PC and aprotic ionic liquids (AILs). When used in combination with a battery electrode, e. g. lithium iron phosphate (LFP), these mixtures allow the achievement of high performance also at a very high C-rate.
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页码：25014 / 25023
页数：10
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