Electrochemical synthesis of macroporous aluminium films and their behavior towards lithium deposition/stripping

摘要

In the present study macroporous aluminium electrodes were made by template assisted electrodeposi-tion from ionic liquids. Polystyrene (PS) spheres (diameter 600nm) were applied onto polished copper electrodes by immersion into an alcoholic suspension containing PS spheres. Al was deposited from the chloroaluminate ionic liquid [EMlmJCI/AlCls (40/60mol.%) on this substrate. After chemical dissolution of the PS spheres a macroporous aluminium electrode was obtained which served as a host material for Li deposition from ionic liquids. Lithium deposition in this matrix is reversible showing certain activation with an increasing number of cycles. After 10 cycles of Li deposition/dissolution the macroporous structure is still visible.