Freestanding electrospun carbon nanofibers uniformly decorated with bimetallic alloy nanoparticles as supercapacitor electrode

Kurtan Ü., Aydın H., Büyük B., Şahintürk U., Almessiere M., Baykal A.

Journal of Energy Storage, cilt.32, 2020 (SCI-Expanded, Scopus) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 32
  • Basım Tarihi: 2020
  • Doi Numarası: 10.1016/j.est.2020.101671
  • Dergi Adı: Journal of Energy Storage
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Compendex, INSPEC
  • Anahtar Kelimeler: Electrospun nanofibers, Carbonization, CoNi nanoparticles, Supercapacitors, HIERARCHICAL POROUS CARBON, MESO-MICROPOROUS STRUCTURE, ELECTROCHEMICAL PERFORMANCE, NANOFIBER COMPOSITES, MAGNETIC-PROPERTIES, FACILE SYNTHESIS, NITROGEN, LITHIUM, NANOSHEETS, GROWTH
  • İstanbul Üniversitesi-Cerrahpaşa Adresli: Evet

Özet

© 2020 Elsevier LtdIn this paper, we proposed that CoNi-alloy nanoparticles (NPs) can be directly encapsulated carbon nanofibers (CNFs) via electrospinning process followed by heat treatment. By adjusting the concentration of the Co/Ni metallic salts, the electrochemical properties of the resultant nanofibers can easily be tuned. CoNi-alloy NPs embedded in CNF resulted in 1.4 times electrochemical performance compared to the pure CNF. The assembled symmetric supercapacitor (SC) shows a high a specific capacitance of 132 Fg−1 at 1 Ag−1 and it can deliver a specific energy of 4.60 Whkg−1 with a specific power of 250 Wkg−1 with 85.3% capacitance retention up to 10,000 cycles. This work can provide a key strategy for a rapid design of bimetallic alloy nanoparticles directly from their salts in carbon nanofiber for various applications.