Why anode is made up of antimonial-lead instead of Cr in Cr plating?

Anodes are made from antimonial-lead instead of chromium in chromium plating due to the electrochemical properties of lead alloys, which provide better conductivity and corrosion resistance in the plating process. Antimonial-lead anodes are also more stable and less prone to passivation compared to chromium, ensuring a consistent and efficient release of metal ions during plating. Additionally, lead alloys are more cost-effective and easier to work with than chromium, making them a practical choice for anode materials.