Improved super capacitive performance of hydrothermally developed Mn and Ni oxides along with activated carbon as ternary nanocomposite

Khalid F., Saleem M., Jabbar H., Tanvir M. G., Butt M. S., Baluch A. H., ...Daha Fazla

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, cilt.161, 2022 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 161
  • Basım Tarihi: 2022
  • Doi Numarası: 10.1016/j.jpcs.2021.110467
  • Dergi Adı: JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Chemical Abstracts Core, INSPEC, Metadex
  • Anahtar Kelimeler: Nickel and Manganese oxides, Nanocomposites, Supercapacitor electrode, Specific capacitance, Retention, REDUCED GRAPHENE OXIDE, ENHANCED ELECTROCHEMICAL PERFORMANCE, TRANSITION-METAL OXIDES, MANGANESE-DIOXIDE, NICKEL FOAM, SUPERCAPACITOR ELECTRODE, NANOTUBE COMPOSITE, FACILE SYNTHESIS, ENERGY-STORAGE, IN-SITU
  • Karadeniz Teknik Üniversitesi Adresli: Evet

Özet

Nickel oxide-manganese oxide (NMO) nanowires were synthesized, as binary nanocomposite, by simple hydrothermal technique in the wt% of NiO: MnO2 as 2:1. Also, manganese oxide (MO) and nickel oxide/Manganese oxide/activated carbon (NMO/AC) as binary and ternary composites, respectively, were produced for comparative study. All the materials were characterized by X-ray diffraction (XRD) for crystalline information, scanning electron microscopy (SEM) for morphological details, Fourier transform infrared spectroscopy (FTIR) for the indication of vibrational modes, and at the end, cyclic voltammetry analysis (CV), galvanostatic charge/ discharge analysis (GCD), and electrochemical impedance spectroscopy for specific capacitance (Cs) and other super capacitive features. The best results were achieved for NMO nanowires as they exhibited a specific capacitance of 1634.4 Fg-1 at 12 Ag-1 while for NMO/AC, Cs declined to 1347 F/g. After 10,000 cycles, the specific capacitance of NMO was still sustained at 96.5% which shows magnificent cycling stability. The results show that doping of nickel cation amplifies the electrochemical performance of NMO material as an electrode for supercapacitor application.