Synthesis of ultra-long boron nanowires as supercapacitor electrode material
APPLIED SURFACE SCIENCE, cilt.493, ss.787-794, 2019 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 493
- Basım Tarihi: 2019
- Doi Numarası: 10.1016/j.apsusc.2019.07.031
- Dergi Adı: APPLIED SURFACE SCIENCE
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.787-794
- Karadeniz Teknik Üniversitesi Adresli: Hayır
Özet
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).