Synthesis of ultra-long boron nanowires as supercapacitor electrode material

TUZLUCA YEŞİLBAĞ F. N., YEŞİLBAĞ Y. Ö., ERTUĞRUL M.

APPLIED SURFACE SCIENCE, vol.493, pp.787-794, 2019 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 493
  • Publication Date: 2019
  • Doi Number: 10.1016/j.apsusc.2019.07.031
  • Journal Name: APPLIED SURFACE SCIENCE
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.787-794
  • Karadeniz Technical University Affiliated: No

Abstract

The aim of the present study was to examine the electrochemical performance of boron nanowires (BNWs) grown using the vapor-liquid-solid (VLS) growth mechanism in the chemical vapor deposition (CVD) system at 1200 degrees C on a silicon wafer in the presence of iron (Fe) catalyst nanodroplets as a supercapacitor electrode material in 1 M Na2SO4 aqueous electrolyte solution. The structure and morphology of BNWs were examined using field emission scanning electron microscopy (FESEM), energy dispersive X-ray spectroscopy (EDS), X-ray diffraction (XRD), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), and high-resolution transmission electron microscopy (HR-TEM) analyses, while their electrochemical performances were determined by measuring the cyclic voltammetry (CV), galvanostatic charge-discharge (GCD), and electrochemical impedance spectra (EIS). BNWs showed great cycle stability with an areal capacitance of 30 mF cm(-2) and 93.4% of the initial areal capacitance even after a 10,000 GCD cycle at a current density of 0.1 mA cm(-2).