Fabrication of Fe2O3 nanostructure on CNT for oxygen evolution reaction. Issue 19 (1st October 2022)

• Record Type: Journal Article
• Authors: Palem, Ramasubba Reddy; Meena, Abhishek; Soni, Ritesh; Meena, Jagdeesh; Lee, Soo-Hong; Patil, Supriya A.; Ansar, Sabah; Kim, Hyun-Seok; Im, Hyunsik; Bathula, Chinna
• Is Part Of: Ceramics international. Volume 48:Issue 19(2022)Part B
• Page Start: 29081
• Page End: 29086
• Publication Date: 2022-10-01
• Subjects: Fe2O3@CNT -- Oxygen evolution reaction -- Electrocatalyst -- Long-term durablity; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2022.04.322
• Languages: English
• ISSNs: 0272-8842

Abstract

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 Fe2 O3 and Fe2 O3 @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 Fe2 O3 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 Fe2 O3 @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 Fe2 O3 ( η = 290 mV) in 1 M KOH. Further, Fe2 O3 @CNT electrocatalyst shows high long-term durability in 1 M KOH for 100 h, fulfilling all the advantageous viable standards for OER.