β-Ni(OH)2/nickel-cobalt layered double hydroxides coupled with fluorine-modified graphene as high-capacitance supercapacitor electrodes with improved cycle life

Construction of Core‐Shell Heterostructured Nanoarrays of Cu(OH)2@NiFe‐Layered Double Hydroxide through Facile Potentiostatic Electrodeposition for Highly Efficient Supercapacitors

“…The resulting capacitance for COH@NF-LDH/CF-3 is also higher than those materials for NiFe-LDH or Cu(OH) 2 previously reported from the related kinds of literature (Figure 4i). [53][54][55][56][57][58][59] Accordingly, we found that the area capacitance has a general tendency to increase with the increasing electrodeposition time. Because a relatively long time of electrodeposition can generate more NiFe-LDH nanosheets on Cu(OH) 2 nanorods, providing more active sites and channels for electron and ion transfer, resulting in dramatically boosted total capacitance.…”

Design of Ni(OH)2/M-MMT Nanocomposite With Higher Charge Transport as a High Capacity Supercapacitor

“…The nano-petals surface had grooves and gap, which improved the movement of electrolyte ions. The gap between the petals facilitated the insertion of electrolyte ions into the electrode surface ( Jiang et al, 2021 ). This enhanced the electrochemical activity of Ni(OH) 2 /M-MMT nanocomposite, resulting in a significant increase in the specific capacitance of the nanocomposite.…”

A CoNi telluride heterostructure supported on Ni foam as an efficient electrocatalyst for the oxygen evolution reaction

“…It is obvious that ultrathin nanosheets have grown vertically or slantly on the Ni foam, and the highly hierarchical nanostructure of 0.4CoNi LDH@Te-180C can provide a much more contact surface area with the electrolyte, thereby promoting ion penetration and accelerating the speed of the redox reaction. 34,35 Furthermore, the chemical composition of the 0.4CoNi LDH@Te-180C sample was determined by inductively coupled plasma optical emission spectrometry (ICP-OES). Elemental analysis in Table S1, ESI, † indicates successful Co element doping in the 0.4CoNi LDH@Te-180C sample.…”