Abstract
The formation of complex ion in NaCl-PbCl2 solution increases the polarization, but compact lead does not separate out. At low current density separated lead becomes more compact. Owing to the formation of PbCl2 film at the anode it changed to the passive state and the voltage necessary for electrolysis increases alove lOV. When an insoluble anode is used, Pb (OH)2 and H2 gas are produced at 2.8 V on the cathode. The pH of catholyte remains almost unchanged, but anolyte becomes acidic due to the production of Cl2 gas. In this case separated lecd is spongy. When diaphragm is used, current efficiency increase up to 85%.
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