The kinetics of the dissolution and deposition of aluminum from a first generation ionic liquid consisting of AlCl 3 /1-ethyl-3-methylimidazolium chloride (molar ratio 2:1) was studied. Electrochemical impedance spectroscopy shows that the double layer capacitance and the charge–transfer resistance depend on the state of the electrode surface. The impedance spectra are strongly influenced by mass transport. The rate–determining step of the aluminum deposition, as determined from the cathodic Tafel slope evaluated from current step experiments, was found to be either a chemical step, releasing the complexing agent chloride, while aluminum is in the divalent oxidation state (AlCl 3 − → AlCl 2 + Cl − ) or an electron transfer from the divalent to the monovalent aluminum occurring twice for the overall reaction to occur once (Al 2+ + e − → Al + ). The rate–determining step for aluminum dissolution was foun...

中文翻译：

---

铝在[EMIm] Cl基离子液体中的沉积和溶解-电荷转移动力学和速率确定步骤

研究了第一代离子液体中铝的溶解和沉积动力学，该离子液体由AlCl 3 / 1-乙基-3-甲基咪唑鎓氯化物（摩尔比为2：1）组成。电化学阻抗谱表明，双层电容和电荷转移电阻取决于电极表面的状态。阻抗谱受质量传输的强烈影响。由当前步骤实验评估的阴极塔菲尔斜率确定的铝沉积速率决定步骤被发现是化学步骤，释放出络合剂氯化物，而铝处于二价氧化态（AlCl 3- →AlCl 2 + Cl-）或从二价铝到一价铝的电子转移发生两次，使整个反应发生一次（Al 2+ + e-→Al +）。