3D flower-like NiCo2O4 electrode material prepared by a modified solvothermal method for supercapacitor

摘要

Novel 3D hierarchical mesoporous flower-like NiCo2O4 electrode material was prepared by water ethanol mixed solvothermal method combining the calcination process. Nickel sulfate hexahydrate (NiSO4 center dot 6H(2)O), cobalt sulfate heptahydrate (CoSO4 center dot 7H(2)O), rare-used guanidine (CH6CIN3) were used as nickel and cobalt sources, precipitant of weak base, respectively. The resultant samples were characterized by X-ray diffraction, scanning electron microscopy, N-2 adsorption and desorption and transmission electron microscopy. The prepared NiCo2O4 material exhibited excellent electrochemical performance-with a high specific capacitance of 1609 F g(-1) at 1 A g(-1), and high capacity retention of 85% after a 1000-cycle charge-discharge at 10 A g(-1). (C) 2017 Elsevier B.V. All rights reserved.