MnO2/g-C3N4/Co3O4 nanocomposite as a promising supercapacitor electrode with high cycling stability

Kılıç Dokan F.

msng 2021, Elazığ, Turkey, 14 - 17 July 2021, pp.80-84

  • Publication Type: Conference Paper / Summary Text
  • City: Elazığ
  • Country: Turkey
  • Page Numbers: pp.80-84
  • Kayseri University Affiliated: Yes

Abstract

Energy is an extremely vital need in our daily life. The fact that energy is so important makes energy storage technologies indispensable. Fuel cells, batteries, and supercapacitors stand out as energy storage systems. Supercapasitors have attracted great interest due to their excellent fast charge/discharge ability and long cycle life among energy storage technologies. Graphitic carbon nitride (g-C3N4) has drawn attention as a 2D nitrogen-containing carbon material with incredible electronic properties. Among metal oxides, MnO2 and Co3O4 have been extensively studied due to their good electrochemical properties. Herein, we wanted to take advantage of this excellent combination. MnO2/g-C3N4/Co3O4 nanocomposite has been successfully fabricated through a facile hydrothermal method. The coupling of metal oxides and the nitrogen-containing carbon material (g-C3N4) demonstrated great electrochemical performance as a supercapacitor electrode. MnO2/g-C3N4/ Co3O4 nanocomposite electrode demonstrated high specific capacitance of 299 F/g at a current density of 0.5 A/g, excellent cycling stability, and over %89 capacitance retention after 10000 cycles. This study showed the advantages of the MnO2/g-C3N4/Co3O4 nanocomposite for improved supercapacitor applications.