Design of Electrocatalyst for  CO 2 Reduction: V . Effect of the Microcrystalline Structures of Cu‐Sn and Cu‐Zn Alloys on the Electrocatalysis of Reduction

Electrocatalytic activities of Cu‐Sn and Cu‐Zn alloys for reduction were examined in 0.05M aqueous solution at 2°C. It was found that the selectivity, the reversibility, and the reactivity for or production strongly depended on the microcrystalline phase rather than the gross composition of alloys. The crystallites of the intermetallic compounds of and were effective phases for the selective formation of with a high reaction rate.