In-situ Optical Microscope Morphology Observation of Lithium Electrodeposited in Room Temperature Ionic Liquids Containing Aliphatic Quaternary Ammonium Cation

被引：13
作者：
Sano, Hikaru [1 ,2 ]
Sakaebe, Hikari [1 ,2 ]
Matsumoto, Hajime [1 ,2 ]
机构：
[1] Natl Inst Adv Ind Sci & Technol, Res Inst Ubiquitous Energy Devices, Ikeda, Osaka 5638577, Japan
[2] Japan Sci & Technol Agcy, CREST, Ikeda, Osaka 5638577, Japan
来源：
ELECTROCHEMISTRY | 2012年 / 80卷 / 10期
关键词：
Lithium Metal Anode; Dendrite; Room Temperature Ionic Liquids; In-situ Optical Microscope Observation; VINYLENE CARBONATE; LI ANODE; ELECTROLYTE; METAL; FILM;
D O I：
10.5796/electrochemistry.80.777
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
The behavior of lithium (Li) electrodeposition in room temperature ionic liquids (RTILs) containing aliphatic quaternary ammonium cation was investigated by in-situ optical microscope observation. As a result, round shape Li deposits were obtained after deposition in all cases with vinylene carbonate (VC) as an additive, while most deposits were dendritic without VC. AC impedance spectroscopic measurements indicated that the dendrite growth was suppressed when a surface film with large resistance was generated. The dendrite suppression effect by VC addition was confirmed in the Py14[TFSA]-based and TMHA[TFSA]-based electrolytes as well as in the PP13[TFSA]-based electrolyte. (C) The Electrochemical Society of Japan, All rights reserved.
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收藏
页码：777 / 779
页数：3
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