Wood-derived scaffolds decorating with nickel cobalt phosphate nanosheets and carbon nanotubes used as monolithic electrodes for assembling high-performance asymmetric supercapacitor

Recent advances in Ni-materials/carbon nanocomposites for supercapacitor electrodes

“…Also, its usage in supercapacitors composed of self-activated carbonized wood (SCW) electrodes as a cathode delivered outstanding traits. 151 CNTs/Ni–Co sulfide composites exhibited the synergy between the components. It was used by Huang et al 152 as a positive electrode with a high specific capacity of 734 C g −1 in the supercapacitor of CNTs/Ni–Co–S-3//AC HSC with an energy density of 42.15 W h kg −1 and long-term stability.…”

“…The electrochemical properties of supercapacitors on the basis of Ni materials and CNTs composite electrodes are reported in Table 2 144–163 The nanocomposite CNTs/NiCo 2 S 4 showed remarkable capacitive properties. In the structure of the asymmetric supercapacitor, it exhibited energy and power densities of 43.3 W h kg −1 and 800 W kg −1 .…”

“…Ternary nickel cobalt sulfide/oxides and carbon nanotube composites. The electrochemical properties of supercapacitors on the basis of Ni materials and CNTs composite electrodes are reported in Table 2 [144][145][146][147][148][149][150][151][152][153][154][155][156][157][158][159][160][161][162][163] The nanocomposite CNTs/NiCo 2 S 4 showed remarkable capacitive properties. In the structure of the asymmetric supercapacitor, it exhibited energy and power densities of 43.3 W h kg À1 and 800 W kg À1 .…”

High-performance asymmetric supercapacitor device with nickel–cobalt bimetallic sites encapsulated in multilayered nanotubes

“…21 Integrated carbon nanotubes (CNTs) and nickel-cobaltphosphate (NiCo-P) offer a maximum capacitance retention rate of 86% with excellent energy density in an ASC with 92.4% retention of capacitance upon 10 000 charge-discharge cycles. 22 The transition of the NF/MnP/NiCoP composite occurs in different charge/discharge cycles wherein the specific capacitance was enhanced with extended charge/discharge cycles. 23 The Co/Ni ratio significantly affects the gravimetry capacitance of the Ni 4Àx Co x WO 4 /HPC electrode.…”

Three dimensional high-performance micro-supercapacitors with switchable high power density and high energy density

“…Furthermore, their market share is expanding year by year. 13,14 On the other hand, various manufacturing methods for MSCs have also been designed, such as photolithography, 15,16 chemical vapor deposition, 17,18 screen printing, 19 laser-induction, 20 plasma etching, 21 and blade coating. 13 Compared to other methods, laser-induced technology has the advantages of low cost, simple operation, and the ability to design electrodes in a patterned manner.…”