KANG Yanhong, CHEN Shimou, ZHANG Junling, et al. Electrodeposition of aluminum from [BMIM]Cl/AlCl3 ionic liquids at low temperature[J]. CIESC Journal, 2013, (S1): 147-154. DOI: 10.3969/j.issn.0438-1157.2013.z1.022.
KANG Yanhong, CHEN Shimou, ZHANG Junling, et al. Electrodeposition of aluminum from [BMIM]Cl/AlCl3 ionic liquids at low temperature[J]. CIESC Journal, 2013, (S1): 147-154. DOI: 10.3969/j.issn.0438-1157.2013.z1.022.DOI:
Aluminium can be electrodeposited from the ionic liquid 1-butyl-3-methyl imidazole salt chloride ([BMIM]/AlCl3) below 100℃. It was found that voltage for aluminium deposition decreases with the increase of temperature and the current density increase with the increase of temperature. When the temperature reaches 90℃
the electrolyte become unstable. At a certain temperature
the current density increased gradually with the electrolyte [BMIM]Cl∶AlCl3 molar ratio changes from 1∶1.25 to 1∶2.00. Effects of current density
temperature on the morphology of Al depositions were studied by Hull cell test. The surface on the cathode is characterized by using scanning electron microscope (SEM) and X-ray diffraction (XRD). Along with the current density decreasing
the electrochemical deposition layers of aluminium become thinner and thinner
but the crystal structure of the aluminium almost no change. Furthermore
the microstructures of deposition aluminium are greatly influenced by temperature. Based on all these investigations
the optimized technological parameters for electrodeposition of aluminum from [BMIM]Cl/AlCl3 were obtained.