Preparation of manganese thin film in room-temperature butylmethylpyrrolidinium bis(trifluoromethylsulfony)imide ionic liquid and its application for supercapacitors

被引：16

作者：

Chang, Jeng-Kuei ^{[1
]}

Tsai, Wen-Ta

Chen, Po-Yu

Huang, Chiung-Hui

Yeh, Fu-Hwa

Sun, I-Wen

机构：

[1] Natl Cheng Kung Univ, Dept Mat Sci & Engn, Tainan 70101, Taiwan

[2] Kaohsiung Med Univ, Fac Med & Appl Chem, Kaohsiung, Taiwan

[3] Natl Cheng Kung Univ, Dept Chem, Tainan, Taiwan

来源：

ELECTROCHEMICAL AND SOLID STATE LETTERS | 2007年 / 10卷 / 01期

关键词：

D O I：

10.1149/1.2388243

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The butylmethylpyrrolidinium bis(trifluoromethylsulfony)imide (BMP- NTf2) ionic liquid was found to have a very wide potential window of 4.5 V, making it capable of being a medium for electrodepositing metallic Mn thin film. By using an electrochemical process, block manganese counter electrode was dissolved in the ionic liquid to generate divalent Mn, which was subsequently cathodically deposited on the nickel substrate. The current efficiency of this process was confirmed to be extremely high (close to 100%). The Mn thin film can be oxidized to manganese oxide by cyclic voltammetry in Na2SO4 electrolyte. The obtained manganese oxide exhibited an excellent pseudo-capacitive performance and possessed a satisfactory specific capacitance of 265 F/g at a moderate cyclic voltammetric sweep rate of 25 mV/s. (c) 2006 The Electrochemical Society.

引用

页码：A9 / A12

页数：4

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