Journal
MATERIALS & DESIGN
Volume 189, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.matdes.2020.108525
Keywords
ZnO@C foam; Flexible; Energy storage devices; Supercapacitor
Categories
Funding
- Research Council of Alzahra University
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In this work, we have synthesized a flexible ZnO@C foam for its potential applications in energy production and storage devices based on the simple and versatile method. The fabricated ZnO@C foam exhibited enhanced capadtance compared to commercially available Ni foam. The fabrication process involves the synthesis of ZnO nanostructures, deposition of ZnO@C nanostructure on Ni foam, and finally, removing Ni substrate to have ZnO@C foam. Based on cyclic voltammetry, galvanostatic charge-discharge curves and electrochemical impedance spectroscopy, it was concluded that the ZnO@C foam has a suitable electron transfer rate and conductivity. ZnO@C foam provides a high areal specific capacitance of 1120 mF cm(-2) at a current density of 4 mA cm(-2). The proposed flexible foam has potential applications in the fabrication of solid-state supercapadtors as well as fuel cells. (C) 2020 The Authors. Published by Elsevier Ltd.
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