Liquid phase plasma synthesis of iron oxide nanoparticles on nitrogen-doped activated carbon resulting in nanocomposite for supercapacitor applications

Heon Lee, Won June Lee, Young Kwon Park, Seo Jin Ki, Byung Joo Kim, Sang Chul Jung

Research output: Contribution to journalArticlepeer-review

20 Scopus citations

Abstract

Iron oxide nanoparticles supported on nitrogen-doped activated carbon powder were synthesized using an innovative plasma-in-liquid method, called the liquid phase plasma (LPP) method. Nitrogen-doped carbon (NC) was prepared by a primary LPP reaction using an ammonium chloride reactant solution, and an iron oxide/NC composite (IONCC) was prepared by a secondary LPP reaction using an iron chloride reactant solution. The nitrogen component at 3.77 at. % formed uniformly over the activated carbon (AC) surface after a 1 h LPP reaction. Iron oxide nanoparticles, 40~100 nm in size, were impregnated homogeneously over the NC surface after the LPP reaction, and were identified as Fe3O4 by X-ray photoelectron spectroscopy and X-ray diffraction. NC and IONCCs exhibited pseudo-capacitive characteristics, and their specific capacitance and cycling stability were superior to those of bare AC. The nitrogen content on the NC surface increased the compatibility and charge transfer rate, and the composites containing iron oxide exhibited a lower equivalent series resistance.

Original languageEnglish
Article number190
JournalNanomaterials
Volume8
Issue number4
DOIs
StatePublished - Apr 2018

Keywords

  • Activated carbon powder
  • Iron oxide nanoparticle
  • Liquid phase plasma
  • Nitrogen-doped carbon
  • Pseudo-capacitive characteristics

Fingerprint

Dive into the research topics of 'Liquid phase plasma synthesis of iron oxide nanoparticles on nitrogen-doped activated carbon resulting in nanocomposite for supercapacitor applications'. Together they form a unique fingerprint.

Cite this