Supercapacitors incorporating hollow cobalt sulfide hexagonal nanosheets

Carbon nanotubes/cobalt sulfide composites as potential high-rate and high-efficiency supercapacitors

“…S1B), we estimated from 300 counts that the sizes of CoS hexagonal nanostructures are 90 AE 20 nm in edge length. It was clearly observed that CoS hexagonal nanostructures were highly porous mainly because of the presence of PVP as a stabilizer [29]. Detailed structural analysis of CoS hexagonal nanostructures reveals the existence of a set of (311) planes, each with a lattice spacing of 0.28 nm (Fig.…”

High performance solid state flexible supercapacitor based on molybdenum sulfide hierarchical nanospheres

“…Activated carbon, transition metal oxides and conductive polymers are widely used as electrode materials for supercapacitors [8]. Among metal sulfide compounds like copper sulfide nanowires [12], C/K copper sulfide nanowires [13], cobalt sulfide nano nanotubes, sheets [14,15], nickel sulfide nano nests [16], MoS 2 is an important material for electrochemical devices. The MoS 2 crystal consists of a metal Mo layer sandwiched between two S layers, with these triple layers stacked together to form a layered structure.…”

Hierarchical mesoporous CoS2 microspheres: Morphology-controlled synthesis and their superior pseudocapacitive properties

“…All CV curves share a similar shape with two pairs of distinct redox peaks rather than ideal rectangle, suggesting typical pseudocapacitive characteristics. According to the reported literatures [33,34], the peaks are related to the Faradic redox processes of Co 2+ $ Co 3+ and Co 3+ $ Co 4+ mediated by OH À under alkaline conditions. The electrochemical reactions occurring within the electroactive materials are described as follows [35]:…”