Amorphous ZnO@S-doped carbon composite nanofiber for use in asymmetric supercapacitors

Üstün B., Aydın H., KOÇ S. N., KURTAN Ü.

Diamond and Related Materials, cilt.136, 2023 (SCI-Expanded, Scopus) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 136
  • Basım Tarihi: 2023
  • Doi Numarası: 10.1016/j.diamond.2023.110048
  • Dergi Adı: Diamond and Related Materials
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Aerospace Database, Chemical Abstracts Core, Chimica, Communication Abstracts, Compendex, INSPEC, Metadex, Civil Engineering Abstracts
  • Anahtar Kelimeler: Amorphous zinc oxide (ZnO), Asymmetric supercapacitor, Composite fiber, Sulfur doping
  • İstanbul Üniversitesi-Cerrahpaşa Adresli: Evet

Özet

In this study, amorphous zinc oxide incorporated with sulfur-doped carbon composite nanofiber (ZnO@S-CNF) was obtained through a facile electrospinning technique and calcination. The ZnO@S-CNF composite was characterized in detail in order to understand the structural features of the electrodes and applied for supercapacitors. As a self-supporting electrode, it achieved a high capacitance of 209 F/g at 1 A/g and sustained 158 F/g at 10 A/g. Also, an asymmetric supercapacitor (ASC) assembled by ZnO@S-CNF as the positive and carbon nanofiber as the negative electrode (−CNF//ZnO@S-CNF+) achieved a specific energy of 11.2 Wh/kg at a specific power of 900 W/kg in 0–1.8 V. The excellent electrochemical performance can be ascribed to the enhanced surface area, increased micropore volume, and heteroatom content. This study can provide a feasible way for the development of other carbon composite electrodes with remarkable performance.