Outstanding supercapacitor performance with intertwined flower-like NiO/ MnO2/CNT electrodes

Pecenek H., KILIÇ DOKAN F., ÖNSES M. S., Yilmaz E., ŞAHMETLİOĞLU E.

MATERIALS RESEARCH BULLETIN, cilt.149, 2022 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 149
  • Basım Tarihi: 2022
  • Doi Numarası: 10.1016/j.materresbull.2022.111745
  • Dergi Adı: MATERIALS RESEARCH BULLETIN
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Chemical Abstracts Core, INSPEC
  • Anahtar Kelimeler: Binary metal oxide, MnO2, NiO, Supercapacitor, ELECTROCHEMICAL PERFORMANCE, NANOCOMPOSITE, COMPOSITE, NICKEL, OXIDES, FABRICATION, NANOSHEETS, COPOLYMER, BEHAVIOR, DESIGN
  • Erciyes Üniversitesi Adresli: Evet

Özet

Binary metal oxides have been broadly investigated as a new electrode material for supercapacitor applications owing to their high reversible performance and good conductivity. When compared to a single candidate, the composite's electrochemical performance is considerably improved by the unique mix of pseudo-material and carbon material. Herein, we report a facile and rational synthesis procedure to fabricate a high performance supercapacitor electrode. The prepared NiO/MnO2/ carbon nanotube (CNT) composite has wonderfully stratified flower-like morphology. The positive synergism among components and unique structure has enabled a high specific capacitance of 1320 F/g at 1 A g-1. After 3000 cycles, the supercapacitor maintains more than 90% of its initial capacitance. Moreover, we also successfully prepared a symmetrical supercapacitor which is made up of two pieces of composite electrode separated with a membrane. The findings highlight that NiO/MnO2/CNT composite is highly desirable for future hybrid energy storage applications.