Electrochemical performance of zinc carbodiimides based porous nanocomposites as supercapacitors
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Date
2021
Journal Title
Journal ISSN
Volume Title
Publisher
Elsevier
Abstract
The low energy densities of supercapacitors are generally limited by the used anodes. To develop supercapacitors with high energy densities, metal–organic framework (TRD-ZIF-8) derived honeycomb-like porous zinc carbodiimide (ZnNCN) based nanocomposites (HPZC) surface loaded with graphitized carbon nitride (g-C3N4) are synthesized. After their detailed characterization by means of electron microscopy, spectroscopy and electrochemical techniques, the materials are used to prepare asymmetric supercapacitor cells (HPZC-4//AC ASCs) with HPZC-4 and active carbon as electrodes, which demonstrate power and energy densities as high as 7839 W Kg−1 and 213 Wh Kg−1, respectively. The unique honeycomb-like porous structure of HPZC loaded with a 2D material (g-C3N4) improves charge/mass transport efficiency and reduces ion diffusion resistance, contributing to a specific capacitance of 779 F g−1 at a current density of 3 A g−1.
Description
Keywords
Energy storage, Graphitic carbon nitride, Supercapacitor, Zinc carbodiimides, ZIF-8
Citation
Linkov, V. et al. (2021). Electrochemical performance of zinc carbodiimides based porous nanocomposites as supercapacitors. Applied Surface Science, 541,148355