Journal
IONICS
Volume 28, Issue 2, Pages 859-869Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s11581-021-04321-5
Keywords
Ap-modified ZnO; Cyclic voltammetry; Gravimetric capacitance
Funding
- DST, Government of India [SR/WOS-A/CS-22/2016]
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The study successfully synthesized aminophenol-modified zinc oxide, which showed excellent electrochemical performance and is suitable 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.
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