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Factors Affecting the Electrodeposition of Aluminum Metal in an Aluminum Chloride–Urea Electrolyte Solution
Author(s) -
Prabu Samikannu,
Wang HongWen
Publication year - 2017
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.201700191
Subject(s) - chemistry , electrolyte , scanning electron microscope , urea , aluminium , microstructure , electroplating , inorganic chemistry , nuclear chemistry , layer (electronics) , materials science , composite material , electrode , organic chemistry , crystallography
Electrodeposition of aluminum metal using an AlCl 3 –urea ionic liquid electrolyte at room temperature is studied. The molar ratio of AlCl 3 /urea, addition of toluene, stirring speed, deposition duration, and temperature are the major factors that affect the deposition of aluminum. The electroplating is carried out at temperatures in the range 20–60°C at a stirring speed 0–80 rpm using bias of 1 V applied for 2 h. The aluminum electrodeposition is enhanced at a high molar ratio of AlCl 3 /urea using 20% diluted toluene electrolyte. The microstructure of the deposited aluminum layer is examined using X‐ray diffraction (XRD), energy dispersive spectroscopy (EDS), and scanning electron microscopy (SEM). The current density is found to decrease with the duration and at lower temperatures. In this study, a current efficiency as high as ~89.98% could be obtained at 60°C.