One-pot synthesis of flower-like Ni-Co/reduced graphene oxide layered double hydroxide nanocomposites as advanced electrodes for high-performance asymmetric supercapacitors

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

“…NiCo-layered double hydroxides (NC-LDH)/rGO composites were prepared as high-performance electrodes for employment as the positive electrode in supercapacitors and AC as the negative electrode, which displayed a high electrochemical performance. 103 3D hierarchical Ni–Co layered double hydroxides (LDH) wrapped around a porous Co 3 O 4 nanocube derived from ZIF-67 were synthesized as an electrode (Ni–Co LDH/Co 3 O 4 Nc). The supercapacitor constructed from this electrode and three-dimensional spongy graphene (3DSGr) showed a high energy density and superior recyclability.…”

Rapid and Facile Method for the Synthesis of a Nanoarray Hierarchical Composite and Its Application in Flexible Self-Chargeable Supercapacitors

“…19 Rosaiah's group grew 2D flower-like NiCo-LDH nanoplates on conductive rGO by a facile one-pot method, and the composite achieved a specific capacitance of 1913.5 F g −1 at 1 A g −1 . 20 Li et al synthesized 3D indium tin oxide nanowires (ITO NWs) via chemical vapor deposition (CVD), then electrodeposited NiCo-LDH, and subject to electrochemical polymerization with PPy to obtain PPy@NiCo-LDH@ITO NWs electrodes, which exhibited a surface capacitance of 598 mF cm −2 at 5 mV s −1 . 21 The graphene nanoscroll (GNS) represents a novel 1D derivative of graphene, typically formed by spirally rolling 2D graphene nanosheets.…”

“…Zhang et al synthesized nanocomposites by loading NiCo-LDH nanoplates onto rGO nanosheets via in situ ZIF-67 growth on GO followed by hydrothermal treatment and achieved a specific capacitance value of 1675 F g –1 at a current density of 1 A g –1 . Rosaiah’s group grew 2D flower-like NiCo-LDH nanoplates on conductive rGO by a facile one-pot method, and the composite achieved a specific capacitance of 1913.5 F g –1 at 1 A g –1 . Li et al synthesized 3D indium tin oxide nanowires (ITO NWs) via chemical vapor deposition (CVD), then electrodeposited NiCo-LDH, and subject to electrochemical polymerization with PPy to obtain PPy@NiCo-LDH@ITO NWs electrodes, which exhibited a surface capacitance of 598 mF cm –2 at 5 mV s –1 …”

Bifunctional ZnMn2O4/reduced graphene oxide microspheres with a needle-like surface architecture as effective electrodes for energy storage

“…[1][2][3][4] As a result, developing energy storage devices such as lithium-ion batteries (LIBs) and supercapacitors (SCs) to meet the global demand is a challenging task for the present researchers. [5][6][7] LIBs have recently received a lot of attention in the field of energy storage due to their advantages of having a long-life span and high energy density. [8][9][10] LIBs have become standard power stations for portable electronics and have demonstrated immense promise in a wide range of potential applications.…”