Addition of multiwalled carbon nanotube and graphene nanosheet in cobalt oxide film for enhancement of capacitance in electrochemical capacitors

Mesoporous cobalt monoxide nanorods grown on reduced graphene oxide nanosheets with high lithium storage performance

“…Graphite oxides were prepared from graphite flakes by a modified Hummers method [41,42]. In a typical synthesis of the CoO NRs/rGO composite, a suspension (50 mL) of graphite oxide (12.5 mg) was ultrasonicated for 30 min, followed by adding 5 mmol of Co(NO 3 ) 2 ·6H 2 O, 10 mmol of NH 4 F, and 25 mmol of CO(NH 2 ) 2 under stirring at room temperature, respectively.…”

Cobalt–carbon derived from zeolitic imidazolate framework on Ni foam as high-performance supercapacitor electrode material

“…On one hand, cobalt metal and its oxides have been heavily studied for applications such as supercapacitors [3][4][5][6][7][8], which showed a good pseudocapacitor behavior. On the other hand, porous carbons, which have the characteristics of large surface area, high conductivity, superior electrochemical stability, good processing ability, controlled pore structure and relatively low cost [9,10], are considered as candidates of electrode materials for supercapacitor.…”

Synthesis and electrochemical properties of ordered mesoporous carbon supported well-dispersed cobalt oxide nanoparticles for supercapacitor

“…Cobalt metal and its oxides have been heavily studied for applications such as supercapacitors [7][8][9][10], anode materials in Liion rechargeable batteries [11], solid-state sensor [12], heterogeneous catalysts [13], solar energy absorbers [14], and electrochromic devices [15]. In strategies for enhancement of performance in energy conversion based on cobalt oxides, the utilization of carbon-based materials such as activated carbon, carbon nanotubes (CNTs) and graphene nanosheet (GNS) is a meaningful and useful way [16][17][18].…”