Anomalous Voltammetric Behavior Observed for Electrodeposition of Indium in the 1-Butyl-1-methylpyrrolidinium Dicyanamide Ionic Liquid. A Result of the Ionic Liquid Cation Adsorption

作者：Liu, Yi-Chen; Chen, Yu-Chen; Hsieh, Yi-Ting^*; Sun, I-Wen^*

来源：Journal of Physical Chemistry C, 2017, 121(16): 8907-8913.

DOI：10.1021/acs.jpcc.7b01375

• ELECTROCHEMICAL DEPOSITION
• DOUBLE-LAYER
• INTERFACE
• ZINC
• PYRROLIDINIUM
• IMIDAZOLIUM
• NANOSTRUCTURE
• ELECTROLYTES
• SPECTROSCOPY
• DYNAMICS

Ionic liquids (ILs) are widely used for electrochemical studies. However, electrochemical reactions taking place in. ILs could be complicated by the interfacial IL ion layers at the electrode/IL interface. In this work, such complications are revealed via the electrochemical study of indiurn(III)/indium redox couple in the 1-butyl-1- methylpyrrolidinium dicyanamide ([BMP](+)[DCA](-)) IL. Anomalous-iroltartimetric behavior is observed with static cyclic voltammetry, convective rotating disk electrode voltammetry, and potential step chronoamperometry. The results indicate that the In(III) reduction process is complicated by the adsorption/desorption of the [BMP](+) cations. Meanwhile, less anomalous voltammetric behavior is observed in the 1-ethyl-3-methylimidazolium dicyanamide ([EMim](+)[DCA](-)) IL, in agreement with the weaker adsorption strength of the [EMim]+ cation. The impact of the cation adsorption is weakened by raising the temperature.

• 出版日期2017-4-27
• 单位苏州大学