Potential Oscillation Associated Galvanostatic Deposition of Periodic Al Wires from a Chloroaluminate Ionic Liquid

Experimental All the electrochemical experiments were carried out in the quiescent AlCl3/TMHC (58/42 mol%) in a N2-filled glove box at 38 ◦ C using a conventional three-electrode cell. An Al spiral wire (Alfa Aesar, 99.95%) immersed in the bulk IL was used as the counter electrode, the reference electrode was an Al wire in a fritted glass tube filled with the same IL. The working electrode was a W wire (diameter =0.5 mm). The electrochemical experiments were performed with an EG&G PARC Model 263A potentiostat/galvanostat controlled with EG&G Model 270 software. High-resolution scanning electron microscopy (HITACHI, SU8000) was used to examine the morphology of the deposits.