Fabrication of Fe2O3 nanostructure on CNT for oxygen evolution reaction

Ramasubba Reddy Palem, Abhishek Meena, Ritesh Soni, Jagdeesh Meena, Soo Hong Lee, Supriya A. Patil, Sabah Ansar, Hyun Seok Kim, Hyunsik Im, Chinna Bathula

Research output: Contribution to journalArticlepeer-review

27 Scopus citations

Abstract

The carbon-based composite materials prepared through green synthetic approach are attracting greater interest in electrochemical applications due to their sustainable nature. Herein, we developed Fe2O3 and Fe2O3@CNT composite materials via a green mechanochemical one-pot method. The as prepared composite materials were characterized by X-ray diffraction (XRD), energy dispersive X-Ray spectroscopy (EDS), field emission scanning microscopy (FE-SEM), high resolution transmission electron microscopy (HR-TEM), and X-ray photoelectron spectroscopy (XPS), respectively. Incorporating Fe2O3 nanoparticles on CNT surface tunes its electronic structure as well increases active sites and thus enhance the oxygen evolution reaction (OER) performance. As a result, the fabricated Fe2O3@CNT is a highly effective and balanced electrocatalyst that delivers superior current density (j = 10 mA cm−2) at low overpotential (η = 270 mV) for OER compared with pristine Fe2O3 (η = 290 mV) in 1 M KOH. Further, Fe2O3@CNT electrocatalyst shows high long-term durability in 1 M KOH for 100 h, fulfilling all the advantageous viable standards for OER.

Original languageEnglish
Pages (from-to)29081-29086
Number of pages6
JournalCeramics International
Volume48
Issue number19
DOIs
StatePublished - 1 Oct 2022

Keywords

  • Electrocatalyst
  • FeO@CNT
  • Long-term durablity
  • Oxygen evolution reaction

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