Porous Co3O4 microflowers prepared by thermolysis of metal-organic framework for supercapacitor

• Published in: Materials chemistry and physics Vol. 168; pp. 127 - 131
• Main Authors: Li, Guo-Chang, Hua, Xiu-Ni, Liu, Peng-Fei, Xie, Yi-Xin, Han, Lei
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 15.11.2015
• Subjects: Electrochemical properties; Electron microscopy; Inorganic compounds; Microporous materials; Electrochemical properties; Microporous materials; Inorganic compounds; Electron microscopy
• ISSN: 0254-0584; 1879-3312
• DOI: 10.1016/j.matchemphys.2015.11.011

Porous Co3O4 microflowers were successfully synthesized by calcinations of novel flower-like metal-organic framework microcrystals. A supercapacitor was conducted based on this porous Co3O4 microflowers as the electrode material, which shows that the porous Co3O4 electrode exhibit a specific capacitance of 240.2 F g−1 at the current density of 0.625 A g−1 and remains more than 96.3% after 2000 cycles. The results demonstrate that porous Co3O4 microflowers can be acted as a promising electrode candidate in supercapacitors. [Display omitted] •A MOF microflowers were prepared from Co2+ and nicotinic acid.•Porous Co3O4 microflowers were obtained by calcinations the MOF precursors.•Porous Co3O4 electrode exhibits a specific capacitance of 240.2 F g−1 at a current density of 0.625 A g−1.•The specific capacitance of Co3O4 remains more than 96.3% after 2000 cycles at 3.75 A g−1.