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Cited by 361

The DOI matches its Crossref record; 45 of the 45 references it cites were found in a registry or an index.

High-Performance Symmetrical Supercapacitor with a Combination of a ZIF-67/rGO Composite Electrode and a Redox Additive Electrolyte

Open access
Sundriyal, Shashank, Shrivastav, Vishal, Kaur, Harmeet, Mishra, Sunita, Deep, Akash·2018·ACS Omega

Abstract

Abstract The synthesis of a highly porous composite of ZIF-67 and reduced graphene oxide (rGO) using a simple stirring approach is reported. The composite has been investigated as an electrode to be assembled in a supercapacitor. In the presence of an optimized redox additive electrolyte (RAE), that is, 0.2 M K3[Fe(CN)6] in 1 M Na2SO4, the ZIF-67/rGO composite electrode has combined the properties of improved conductivity, high specific surface area, and low resistance. The proposed composite electrode in the three-electrode system shows an ultrahigh specific capacitance of 1453 F g–1 at a current density of 4.5 A g–1 within a potential window of −0.1 to 0.5 V. Further, the ZIF-67/rGO composite electrode was used to fabricate a symmetrical supercapacitor whose operation in the presence of the RAE has delivered high values of specific capacitance (326 F g–1 at a current density of 3 A g–1) and energy density (25.5 W h kg–1 at a power density of 2.7 kW kg–1). The device could retain about 88% of its initial specific capacitance after 1000 repeated charge–discharge cycles. The practical usefulness of the device was also verified by combining two symmetrical supercapacitors in series and then lighting a white light-emitting diode (illumination for 3 min). This study, for the first time, reports the application of a ZIF-based composite (ZIF-67/rGO) in the presence of an RAE to design an efficient supercapacitor electrode. This proposed design is also scalable to a flexible symmetric device delivering high values of specific capacitance and energy density.

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Crossref · 10.1021/acsomega.8b02065

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Metadata

Authors
Sundriyal, S., Shrivastav, V., Kaur, H., Mishra, S., & Deep, A.
Venue
ACS Omega
Published
2018-12-14
Volume
3
Issue
12
Pages
17348-17358
ISSN
2470-1343 (ISSN-L)
OpenAlex
W2904284502
Cited by
361
References
45
FWCI
4.86
Type
journal article
Language
en
Open access
gold

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