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High lithium metal cycling efficiency in a room-temperature ionic liquid

被引：435
作者：
Howlett, PC [1 ]
MacFarlane, DR
Hollenkamp, AF
机构：
[1] Monash Univ, Sch Chem, Clayton, Vic 3800, Australia
[2] CSIRO Energy Technol, Clayton, Vic 3169, Australia
来源：
ELECTROCHEMICAL AND SOLID STATE LETTERS | 2004年 / 7卷 / 05期
关键词：
D O I：
10.1149/1.1664051
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
A room-temperature ionic liquid (RTIL) solvent, N-methyl, N-alkyl pyrrolidinium bis(trifluoromethanesulfonyl) amide (P-1X(Tf)(2)N), has been investigated for use in a lithium metal battery. An average cycling efficiency of >99% is achieved at 1.0 mA cm(-2) (I-dep=I-diss) on platinum. At deposition rates up to 1.75 mA cm(-2) optical micrographs indicate that the deposit is uniform and nondendritic. Above 1.75 mA cm(-2), the deposit becomes dendritic and efficiency decays. High cycling efficiency (>99%) can also be obtained on copper, but at relatively low current density (0.1 mA cm(-2)). The deposition/cycling history also influences the cycling behavior of the deposit. (C) 2004 The Electrochemical Society.
引用
收藏
页码：A97 / A101
页数：5
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