Study on electrochemical properties of MOF-derived bi-functional CeCu heterojunction electrode materials

The precursor method is a technique utilized for synthesizing electrode materials. This study reports the synthesis of a novel CuCe bimetallic organic skeleton using the hydrothermal technique. The compound is represented by the molecular formula [CeCu_1.5 3 L 5 H₂O]8H₂O, where L denotes pyridine-2, 5-dicarboxylic acid. As an electrode material precursor, this structure is calcined at different temperatures to obtain CuO/CeO₂ composites with in-situ composite heterostructures. Density functional theory (DFT) calculations confirm that the electrical conductivity of heterojunction materials is predominantly attributed to a single component. Additionally, the preparation conditions of heterojunction were examined. Notably, the heterojunction electrode materials prepared at 500 ℃ demonstrated superior electrochemical properties in both organic lithium-ion batteries and aqueous supercapacitors.