Formation of CMK-3/Co3O4 nanosheets on nickel foam with markedly enhanced pseudocapacitive properties. Issue 9 (September 2018)

• Record Type: Journal Article
• Authors: Zhang, Guoxiong; Chen, Yuemei; Jiang, Yingjian; Lin, Chuan; Chen, Yigang; Guo, Haibo
• Is Part Of: Journal of materials science & technology. Volume 34:Issue 9(2018)
• Page Start: 1538
• Page End: 1543
• Publication Date: 2018-09
• Subjects: CMK-3 -- Nanosheet -- Cobalt oxide -- Energy storage -- Supercapacitor; Metals -- Periodicals; Materials science -- Periodicals; Materials science; Metals; Periodicals; 620.1105
• DOI: 10.1016/j.jmst.2017.12.018
• Languages: English
• ISSNs: 1005-0302

Abstract

Abstarct: Composites of mesoporous carbon (CMK-3) and Co3 O4 nanosheets grown on nickel foam were successfully synthesized by a simple route. A bare Co3 O4 film was synthesized for comparison. With the addition of CMK-3, the Co3 O4 nanoparticles self-organize and agglomerate into nanosheets, showing a significant influence by CMK-3 on the morphology. The CMK-3/Co3 O4 exhibits an optimal specific capacitance of 1131.3 F g −1 in 3 mol L −1 KOH aqueous electrolyte at 0.5 A g −1, and a retention ratio of 91% over 3000 cycles, both being much higher than that achieved from the bare Co3 O4 film (727 F g −1 of specific capacitance, and 82% capacitance retention ratio), indicating that the CMK-3/Co3 O4 nanosheets are very promising as electrode materials for supercapacitor applications.