Cobalt oxide nanocubes as electrode material for the performance evaluation of electrochemical supercapacitor. Issue 1 (January 2018)

• Record Type: Journal Article
• Authors: Jang, Gwang-Su; Ameen, Sadia; Akhtar, M. Shaheer; Shin, Hyung-Shik
• Is Part Of: Ceramics international. Volume 44:Issue 1(2018)
• Page Start: 588
• Page End: 595
• Publication Date: 2018-01
• Subjects: Co3O4 -- Nanocubes -- Electrode -- Supercapacitors -- Specific capacitance; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2017.09.217
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: Porous cobalt oxide (Co3 O4 ) nanocubes (NCs) were synthesized by a simple and cost-effective hydrothermal technique for the potential application of electrochemical supercapacitors. The hydrothermally synthesized materials exhibited the small cube like morphology with the average size of ~ 50 to 60 nm. The surface analysis revealed a good surface area, and high pore volume of the synthesized porous Co3 O4 NCs. The capacitive properties of porous Co3 O4 NCs electrode were investigated by cyclic voltammetry (CV) in 6 M KOH electrolyte and a high specific capacitance of ~ 430.6 F/g at a scan rate of ~ 10 mV s −1 was observed. The capacity retention of up to ~ 85% after 1000 cycles was shown by the fabricated porous Co3 O4 NCs electrode. The porous Co3 O4 NCs showed excellent structural stability through cycling with promising capacity retention which suggested a good quality of porous Co3 O4 NCs as electrochemical supercapacitor electrode.