Based on the characteristics of rare earth,combining lanthanum and neodymium with terephthalic acid ligands,it is possible to obtain organic coordination compounds with special topological structures and electro-chemical properties.Bimetallic organic framework compounds(La/ND-MOFs)were prepared by solvothermal method using lanthanum(La)and neodymium(Nd)as metal sources and terephthalic acid as organic ligands.The structure was characterized by SEM,EDS,FT-IR,XRD and XPS.The composite electrode La/Nd-MOFs was prepared with acetylene black and PVDF and loaded on nickel foam.The electrochemical properties of La/Nd-MOFs were determined by CV,GCD and EIS methods.The results show that at 1A/g,the specific capacitance of La/Nd-MOFs composite modified electrode reaches 408 F/g,and after 5000 cycles of charge and discharge at 8 A/g,the capacitance retention rate remains at 94.4％.
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