Abstract:The electrowinning process plays a substantial role in zinc hydrometallurgy, and its oxygen evolving potential on anode is critical for energy saving and high-quality metallic zinc. Based on the electro-catalysis of carbon nano-materials for oxygen evolving reaction (OER), 6 typical 0-dimensional, 1-dimensional, and 2-dimensional carbon nanomaterials were used as the catalytic enhanced phase to prepare lead-based composite anodes. The electrochemical behavior of the composite anode was studied by cyclic voltammetry, anodic polarization, EIS and corrosion resistant test under zinc electrowinning conditions. Nano-carbon materials enhanced Pb composite anodes show excellent electrocatalysis for OER and their stable overpotetntial are lower than pure Pb anode by more than 96mV under current density of 500A/m2. The electrochemical catalytic performance of 2-dimensional carbon materials is not as well as that of 0-dimensional carbon materials, and the 1-dimensional ones have the best performance among them. After modified with functional groups or decorated with functional particles on the surface of 1-dimensional carbon materials, the increase of electrochemical catalytic performance was significant.