Template-free synthesis of ultrathin mesoporous NiO nanosheets and their application in supercapacitors

Advances in pseudocapacitive and battery-like electrode materials for high performance supercapacitors

“…Over the past few years, NiO has been synthesized in various morphologies for application in SC electrodes. Some of the examples are NiO nanoflowers, 235 microspheres, 236 nanospheres, 237 hollow spheres, 238 nanoflakes, 239 nanosheets, 240 macro tubes, 241 nanowires, 242 nanotubes 243 and nanoparticles. 244–247 However, the favourable electrochemical characteristics of NiO have been offset by its poor conductivity.…”

Necklace-like NiO-CuO Heterogeneous Composite Hollow Nanostructure: Preparation, Formation Mechanism and Structure Control

“…Nanostructured transition metal oxides (MO, where M is Fe, Co, Ni and Cu) are considered as promising candidates for numerous applications, such as, lithium ion batteries 1 , 2 , supercapacitor 3 – 5 , gas sensor 6 , 7 , electrocatalyst 8 , 9 and so on. In order to meet different requirements of applications, MO nanostructures with various morphologies including nanowires 10 , nanotubes 11 , nanorods 12 , nanoflakes 13 and hollow nanospheres 14 , have been developed. Among all of them, hollow nanostructure has attracted intensive research interests owing to its special structural features including high surface area, high surface reaction activity and fast diffusion ability, which are beneficial to the improvement of the catalytic performance, gas sensing, as well as the battery properties 15 .…”