Transition metal oxide assisted quaternary nanoarchitectonics based composite towards enhanced electrochemical energy storage performance

Srijayee Ghosh, Sumit Majumder, Sangam Banerjee

Research output: Contribution to journalArticlepeer-review

Abstract

Herein, we report the large-scale synthesis and compare the effect of transition metal oxide (Co3O4/Fe3O4) nanoparticles assistance on electrochemical energy storage performance of zinc oxide (ZnO)-graphene oxide (GO)-polyaniline (PANI) nanocomposites. The resultant quaternary nanoarchitectonics composites of Co3O4–ZnO–GO–PANI (S1) and Fe3O4–ZnO–GO–PANI (S2) exhibit layered fibrous structure on the surface, where these fibers form a porous and mesh-like network. The systematic electrochemical analyses reveal that S1 has better electrochemical performance as compared to S2. Specifically, S1 has a higher specific capacitance (246.33 F/g) relative to S2 (110.17 F/g) at a current density of 1 A/g due to higher reduction potential of Co (+ 1.81 V) than that of Fe (0.77 V). This higher potential causes Co to be more reactive in the redox transitions than Fe. Moreover, the enhanced ionic intercalation and improved electrical conductivity associated with their specific morphology plays a role to enhance the energy storage performances. Therefore, Co3O4–ZnO–GO–PANI nanoarchitectonics composite can be used as a promising electrode material for high-performance energy storage device fabrication. Graphical abstract: [Figure not available: see fulltext.]

Original languageEnglish
Article number384
JournalApplied Physics A: Materials Science and Processing
Volume129
Issue number5
DOIs
StatePublished - May 2023
Externally publishedYes

Bibliographical note

Funding Information:
One of the authors (S.M.) gratefully acknowledges Swiss Govt Excellence Scholarship ((ESKAS Nr. 2021.0203) for providing Postdoctoral research fellowship.

Funding Information:
One of the authors (S.M.) gratefully acknowledges Swiss Govt Excellence Scholarship ((ESKAS Nr. 2021.0203) for providing Postdoctoral research fellowship.

Publisher Copyright:
© 2023, The Author(s), under exclusive licence to Springer-Verlag GmbH, DE part of Springer Nature.

Keywords

  • Electrochemistry
  • Nanocomposites
  • Supercapacitor
  • Transition metal

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