ZnO Template-Assisted NiO Nano-spheres as Electrode Material for Supercapacitors
Paper ID : 1640-ICNS
Authors:
Zahra Sara Norouzi1, Seyed Ahmad Mozaffari *2, Seyed Heydar Mahmoudi Najafi2
1Department of Chemical Technology, Iranian Research Organization for Science and Technology, Tehran, Iran
2Iranian Research Organization for Science and Technology
Abstract:
In this project, nickel oxide nanospheres have been controllably synthesized via an electrochemical deposition method through ZnO template-assisted method to perform ZnO core – NiO shell (ZnO@NiO). Morphology of as-prepared samples was characterized by field-emission scanning electron microcopy (FE-SEM). It was found that the uniform spheres of core–shell structure were made with ZnO cores surrounded by NiO shells. Electrochemical properties were characterized by cyclic voltammetry (CV), galvanostatic charge/discharge (GCD) measurements, and electrochemical impedance spectroscopy (EIS). Electrochemical results reveal that NiO nanospheres have a high specific capacitance of 246.61 F gr-1 and show good cycle performance. These results demonstrate that the present ZnO@NiO core–shell nanospheres with remarkable electrochemical properties can be considered as potential electrode materials for supercapacitors in high energy density storage systems.
Keywords:
Supercapacitor”, “ZnO template”, “NiO nano-sphere”, “Core-Shell
Status : Abstract Accepted (Poster Presentation)