Heterogeneous molecular catalysts, such as metal phthalocyanines, are efficient electrocatalysts for CO2 reduction reaction (CO2RR). However, the rational design and synthesis of a catalyst-based heterostructure CO2RR remains challenging. Herein, we developed crystalline bimetallic phthalocyanine electrocatalyst (CoPc/FePc HS), which achieved an excellent CO2-to-CO conversion efficiency (99%) o...