Electrodeposition of aluminum nanowires from aluminum chloride trimethylamine hydrochloride ionic liquids

Abstract

The electrochemical fabriccation of Al nanowires by electrodeposition without the use of template and additives is studied in the Lewis acidic aluminum chloride-trimethylamine hydrochloride (AlCl3-TMHC) ionic liquids containing various AlCl3-TMHC mol ratios of 62:38 60:40 and 58:42 The deposition was performed using constant potential pulse potential and constant current electrolysis methods respectively For constant potential electrolysis the diameter of Al nanowires can be varied by deposition potential For constant current electrolysis potential oscillation occurs during the electrolysis the frequency and amplitude of the potential oscillation varies with the applied current Such potential oscillation is associated with the formation of segment Al nanowires Segment Al nanowires can also be prepared by pulse potential electrolysis the width and period of the Al segment can be controlled by pulse-time and pulse-potential All the electrodeposited Al samples are characterized by scanning electron microscopy transmission electron microscopy and X-ray diffraction

Date of Award	2015 Aug 19
Original language	English
Supervisor	I-Wen Sun (Supervisor)