Electrodeposition of Zn-Mg Alloy from Trimethyl Propylammonium Bis (trifluoromethylsulfonyl) imide Ionic Liquid

Electrodeposition of Zn-Mg Alloy in Ethylene Glycol-ZnCl2-MgCl2 Non-Aqueous Solution

“…3(iii). It is thought that Mg was electrodeposited in Zn with nonequilibrium state at this experimental condition and it formed the supersaturated solid solution as observed in our previous studies (12,13,15).…”

“…The amount of MgCl 2 dissolution increased with temperature, and it was 4.42 g at 393 K, corresponding to the concentration of EG-MgCl 2 (85.0-12.5 mol%). In previous studies, Mg(II) ion was introduced by the chemical displacement of Zn(II) ion in baths with Mg metal (12,15) because the sufficient amount of Mg metallic salts such as MgCl 2 or MgBr 2 did not dissolve in ionic liquids, and as a result of this chemical displacement, the reproducibility of bath concentration was not so good at high concentration of Mg(II) ion. In this study, MgCl 2 could be used as the Mg ion source and was introduced to EG-ZnCl 2 (85.0-15.0 mol%) baths by substituting a fraction of ZnCl 2 with MgCl 2 , and the total concentration of metallic salts was maintained at 15.0 mol%.…”

“…Morishita et al prepared the Zn-Mg alloy plated steel by electrodeposition of Mg in a LiCl-KCl-MgCl 2 molten salt at 653 K on Zn plated steel (9). However, considering the electrodeposition on the steel for automobiles produced via a series of heat treatment to increase its mechanical strength, it must be conducted below the temperature of 423 K. In previous studies, we performed the electrodeposition of Zn and Zn-Mg alloy in nonaqueous solutions using ionic liquids such as 1-ethyl-3-methylimidazolium bromide (EMIB) and trimethyl propylammonium bis(trifluoromethylsulfonyl)imide (TMPATFSI) (10)(11)(12)(13)(14)(15). In these studies, we have reported that the addition of ethylene glycol (EG) to ionic liquids promotes the formation of effective Zn ionic species such as ZnBr 4 2and improves the coulomb efficiency and surface morphology of electrodeposits.…”

Electrodeposition of Zn-Sb Thermoelectric Semiconductor Film in Ethylene Glycol Non-Aqueous Solution Containing Zn(II) and Sb(III)

“…And furthermore, regarding this process, the inclusion of hydrogen in the Zn-Sb alloy, which is considered to be very brittle (14), will cause the embrittlement of the electrodeposit. On the other hand, we have studied the electrodeposition of Zn and Zn-Mg alloy films in non-aqueous solutions using ionic liquids such as 1-ethyl-3methylimidazolium bromide (EMIB) (15)(16)(17)(18)(19)(20)(21)(22), and trimethyl propylammonium bis (trifluoromethylsulfonyl) imide (TMPATFSI) (23)(24). In these studies, we have reported that the formation of effective Zn ionic species such as ZnBr 4 2was promoted (22) and the coulomb efficiency and surface morphology of the film were improved by the addition of ethylene glycol (EG) to ionic liquids (15-17, 19, 22).…”

Preparation of Cobalt-Antimony Thermoelectric Film using Pulse Electrolysis in Ethylene Glycol-CoCl₂-SbCl₃ Non-Aqueous Solution

“…Associating with previous studies 11) ～ 19) , the Zn plating and Zn-Mg alloy plating with high-corrosion resistance on the steel for automobile were investigated in non-aqueous solutions using ionic liquids such as 1-ethyl-3-methylimidazolium bromide (EMIB) 11) ～ 16) and trimethyl propylammonium bis (trifluoromethylsulfonyl) imide (TMPATFSI) 17) , 18) , and ethylene glycol (EG) based baths 19) . We had used EG as additive in the ionic liquids for improving the coulomb efficiency and surface morphology of electrodeposits…”