Enhanced electrochemical performance of aminophenol-modified ZnO as electrode material for supercapacitors

In the present work, a one-step synthetic method was implemented in an effective way to synthezise aminophenol-modified zinc oxide (Ap-modified ZnO). The as-prepared sample was characterized by various spectral and analytical tools. The electrochemical performance of Ap-modified ZnO demonstrated that the electrode material can be used in supercapacitors. The pronounced capacitive behaviour of Ap-modified ZnO was proved by cyclic voltammetric studies (CV), galvanostatic charge-discharge test (GCD) and electrochemical impedance spectroscopy (EIS) techniques in 1 M H2SO4. The newly developed Ap-modified ZnO electrode displayed an excellent gravimetric capacitance (C-g) of 427 Fg(-1) at current density of 1 mA cm(-2), which may be attributed to its unique structure, existence of abundant pores and large electroactive sites, supportive for facile electron, ion transport and enhanced electrical conductivity.

Automated summary

The study successfully synthesized aminophenol-modified zinc oxide, which showed excellent electrochemical performance and is suitable for supercapacitors.