MOF(ZM)/Potassium Citrate-Derived Composite Porous Carbon and Its Electrochemical Properties

Metal-organic frameworks are compounds with a reticulated skeletal structure formed by chemically bonding inorganic and organic units that widely used in many fields, such as photocatalysis, gas separation energy storage, because of their unique structures. In this paper, we prepared metal-organic framework [(μ2-2-methylimidazolyl)12-Zn(ii)6-H18O10]n(ZM) well-developed pores high specific surface area MOFs the solution method. And MOF-derived porous carbon was direct charring method an argon atmosphere using mixture ZM, ZM potassium citrate precursors. Characterization analysis revealed maximum ZMPC-800-1:15 2014.97 m2⋅g−1, pore size mainly mesoporous. At current density 1.0 A⋅g−1 capacitance ZMC-800 121.3 F⋅g−1 226.6 F⋅g−1, respectively, substantial increase 86.8%. The decays to 168.8 decay rate 25.5%, when increases 10.0 A⋅g−1. After 5000 constant charge/ discharge cycles, retention still 96.41%. These results prove application materials future supercapacitors is very promising.