Research Article

Investigation of an Electrochemical Method for Separation of Copper, Indium, and Gallium from Pretreated CIGS Solar Cell Waste Materials

Figure 2

Voltammogram of a solution containing copper(II), indium(III), and gallium(III) (solid line) compared to a solution containing only copper(II) (dotted line) or indium(III) (dashed line) at a scan rate of 100 mV/s.