期刊
ELECTROCHEMISTRY COMMUNICATIONS
卷 41, 期 -, 页码 31-34出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.elecom.2014.01.010
关键词
Highly doped silicon nanowires; Micro-supercapacitor; Ionic liquid electrolyte; Electrochemical energy storage; Silicon electrochemical oxidation
资金
- French Agence Nationale de la Recherche (ANR) through the ISICAP ANR [12-BS09-0032]
- CM
- French Direction Generale de l'Armement (DGA)
The potential of silicon nanowires (SiNWs) as electrode material for large-voltage window micro-supercapacitors has been investigated. An ionic liquid electrolyte (EMI-TFSI) has been used in order to prevent the previously reported etching of silicon electrodes. Electrochemical oxidation of silicon surface at high anodic potentials leads to an extended operating voltage range (up to 4 V) and slightly enhanced specific capacitance of silicon electrodes. The ability of SiNW electrodes to operate at high frequency was demonstrated and a promising specific power of 472 mu W cm(-2) was obtained. (C) 2014 Elsevier B.V. All rights reserved.
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