Synthesis of nickel oxalate/zeolitic imidazolate framework-67 (NiC2O4/ZIF-67) as a supercapacitor electrode
Abstract
ZIF-67, NiC2O4·2H2O and NiC2O4/ZIF-67 materials are synthesized by a hydrothermal method. The NiC2O4/ZIF-67 electrode delivers a maximum capacitance of 1019.7 F g−1 at a scan rate of 5 mV s−1, and can maintain the specific capacitance of 73% after 2000 cycles in the 6 M KOH electrolyte.