Colloidal synthesis of flower-like Zn doped Ni(OH)2@CNTs at room-temperature for hybrid supercapacitor with high rate capability and energy density

Effects of chemical composition and vacant oxygen defects on the performance of Ni(OH)2–Ni0.85Se heterostructure nanowires as supercapacitor electrodes

“…7i, Coulombic efficiency is proportional to current density. 36 According to the above analysis results, the Ni(OH) 2 –Ni 0.85 Se electrode has the following advantages:(1) the proportion of Ni 0.85 Se components in the composite is controllable, and the specific surface area and conductivity can also be controlled. (2) The Ni(OH) 2 –Ni 0.85 Se material has the largest specific surface area, and the surface of the material is rich in oxygen vacancies, resulting in surface defects.…”

Heteroatom-doped transition metal hydroxides in energy storage and conversion: a review

“…A series of studies on doping of metal ions have been carried out to stabilize Ni(OH) 2 and promote the capacitance of Ni(OH) 2 . Fu's team 47 synthesized the flower-shaped Zn-doped Ni(OH) 2 electrode (Zn doped Ni(OH) 2 @CNTs) using a colloidal synthesis method, assisted by cetyltrimethyl ammonium bromide (CTAB) and NaBH 4 . A hybrid supercapacitor (HSC) assembled using the Zn doped Ni(OH) 2 @CNTs as the positive electrode and active carbon as the negative electrode exhibits a capacity of 201.7 C g −1 at 1 A g −1 and an energy density of 51.3 W h kg −1 at a power density of 409.6 W kg −1 (Table 1, entry 3).…”

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

“…The various supercapacitors based on the Ni materials//active carbon electrodes have been employed in electrochemical applications, and the novel results of the reported papers are tabulated in Table 4. 182–219 The utilization of active carbon in supercapacitors highlights its valuable role in improving energy storage capabilities and supporting advancements in various fields where efficient power delivery and rapid energy transfer are essential. Ni(OH) 2 /ZIF-67-derived CoS core/carbon cloth (Ni(OH) 2 /CoS/CC) was used in the supercapacitor of Ni(OH) 2 /CoS/CC (cathode)//AC (anode) that revealed a remarkable energy density as well as its excellent electro-catalytic activity towards methanol oxidation.…”

“…This electrode showed prominent electrochemical properties and the supercapacitor of Zn doped Ni(OH) 2 @CNTs(+)//(−)AC exhibited high electrochemical performance. 184 A 3D 2-nodal (3,8)-c tfz-d metal–organic framework (MOF 1) of {[Co 1.5 (TCPB)(1.3-bomb) 0.5 ·(DMF)·(dioxane) 1.5 ]}n has been synthesized and calcined at 700 °C under a N 2 atmosphere to obtain Co/C composite (NC 1 ). 2D flake Ni(OH) 2 was coated on the surface of NC 1 to prepare Ni(OH) 2 /NC 1 (NC 2 ).…”