Electrolysis of molten lead (II) bromide

During the electrolysis of molten lead(II) bromide, PbBr2, bromine gas, Br2 is released at the cathode while the lead metal is formed at the anode.  

Pb2+ and Br- ions are present in the molten lead(II) bromide, PbBr2.  At the anode, bromide ions, Br- are discharged by donating electrons to form bromine molecules, Br2. At the cathode, each lead(II) ion, Pb2+ is discharged by accepting two electrons to form a lead atom.