Which of the following is not correct regarding the electrolytic preparation of H₂O₂?

Hydrogen peroxide 2 2 H O can be manufactured by electrolysis of 50% 2 4 H SO to give peroxy disulphuric acid which on hydrolysis gives hydrogen peroxide. Here, lead is used as the cathode. 2 4 2 2 8( ) 2( ) 2 → aq g electricity H SO H S O H 2 2 8( ) 2 ( ) 2 2 2 4 2 2 aq aq H S O H O H O H SO →