Influence of Ni/Cu ratio in nickel copper carbonate hydroxide on the phase and electrochemical properties

Chemical Modifications of Layered Double Hydroxides in the Supercapacitor

“…The electrochemical performance of some other transition metal ion‐based LDH materials can be regulated by controlling the proportion of metal ions. [ 51–53 ] As shown in Figure a–f, illustrating Co/V‐LDH materials, the microscopic morphology of the materials changes with the ratio of Co/V, from smooth rod‐like to nanoscale flower flake. The Co/V‐3 and Co/V‐4 have a larger specific area, but the excess V ions will destroy the lamellar structure of the Co/V‐4 due to the reduction of crystallization of the electrode materials.…”

Interconnected network‐like single crystalline bimetallic carbonate hydroxide nanowires for high performance hybrid supercapacitors

“…This finding implies more abundant redox-active sites of bimetallic NiCoCH nanowires, which are associated with multiple valence states of Ni and Co. The corresponding redox reactions of NiCoCH electrode material in the aqueous KOH electrolyte can be proposed in Equation ( 1) and (2) 25 :…”

“…The obtained results are higher or even comparable than those of the previous reports (Table S1). 23,25,29,35,[39][40][41][42][43][44][45][46][47][48][49]…”

“…) anion increases the wetting nature of the electrode surface and decreases the polarization of the electrode during a redox reaction. 14,25 Very few works have been currently reported for the application of NiCoCO 3 (OH) 2 as SC electrode materials. For instance, NiCo-hydroxide hybridized with NiCo-carbonate hydroxide presented a maximum specific capacitance of 632 F g −1 at 5 mV s −1 .…”

“…Recently, bimetallic transition metal compounds and their composites have been investigated as potential electrode materials for a high energy density of HSC, owing to their abundant redox‐active sites and multiple valence states from various metallic species 23,24 . Furthermore, the metal carbonate hydroxide‐based materials possess additional benefits, because the hydrophilic nature of carbonate (CO 3 2− ) anion increases the wetting nature of the electrode surface and decreases the polarization of the electrode during a redox reaction 14,25 . Very few works have been currently reported for the application of NiCoCO 3 (OH) 2 as SC electrode materials.…”