ZnO Template-Assisted NiO Nano-spheres as Electrode Material for Supercapacitors
Paper ID : 1640-ICNS
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
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.
Supercapacitor”, “ZnO template”, “NiO nano-sphere”, “Core-Shell
Status : Abstract Accepted (Poster Presentation)