A Novel Synthesis of Mesoporous Nickel Oxide with Excellent Cycling Stability Used in Supercapacitors

Abstract

Abstract Mesoporous nickel oxide is synthesized by a novel method by calcining a nickel–organic coordination complex precursor in this work. The prepared NiO has a uniform pore distribution evidenced by TEM and N2 adsorption–desorption tests. The NiO electrode presents a high specific capacitance of 143 F g−1, excellent rate capability (54.2% capacity retention at 100 mV s−1) and long cycling stability (no decrease in 1000 charge–discharge cycles), indicating a promising electrode material for supercapacitors.