Tailoring of Nanomesh\nArrays with Venus Flytrap-Like\nNiCoP/NiCo-LDH for Supercapacitors

The\nsuperior electrochemical functionality of supercapacitor electrodes\nis heavily reliant on the strategic design of nanostructures that\neffectively integrate diverse active materials. In this study, a facile\nhydrothermal method was investigated for easy synthesis of Venus flytrap-like\nNiCoP using nickel foam (NF) as both the substrate and the nickel\nsource. Furthermore, the electrochemical deposition of NiCo-LDH onto\nthe 3D NiCoP nanomeshes was delved into, creating a hybrid nanomaterial\nwith enhanced energy storage capability of 1675 F/g (1 A/g). This\ninnovative combination of conductive NiCoP as a core and redox-active\nNiCo-LDH as a shell forms a smart heteronetwork that boosts surface\narea, enhances the presence of the redox-active sites, and improves\nion/electron transport for faradaic reactions. The NiCoP/NiCo-2//PC\nsupercapacitor boasts a remarkable energy density of 30.96 Wh/kg and\na power density of 783.90 W/kg and displays favorable capacitance\nretention rate characteristics (73.5%, from 600 to 10,000 cycles).\nThis effective and simple technique for transforming a high-performance\nanode on a nickel foam substrate could significantly improve their\napplicability for large-scale use as well as provide useful knowledge\nfor creating self-supporting substrates for energy storage and conversion\nthrough other manufacturing processes.