Rationally fabricating the hybrid nanostructures with a distinctive surface and internal properties is substantial due to their multifunctional features in energy storage and catalysis applications. Generally, the battery-like supercapacitor materials experience low energy density and inferior cyclic stability issues due to their intercalation/ deintercalation process. To address this problem, the dichalcogenides (WSe 2 and MoSe 2 ) were hybridized with a battery-like material (NiCo 2 O 4 ), which effectively changed the diffused-controlled to the surface-controlled process and enhanced the energy density and cyclic stability features. The pentagon core−hexagon ring-structured NiCo 2 O 4 nanoplate with MoSe 2 hybrid structures presents excellent electrochemical features with a specific capacity of 857 C g −1 at 1 A g −1 and retains 98% initial capacity after 5000 cycles at 30 A g −1 , which is higher than that of pure NiCo 2 O 4 and NiCo 2 O 4 /WSe 2 materials. The asymmetric supercapacitor device (NiCo 2 O 4 /MoSe 2 //activated carbon) provides an energy density of 69 W h kg −1 at a power density of 1280 W kg −1 and withstands an excellent cyclic stability of 95% after 10,000 cycles at 30 A g −1 . Moreover, a preliminary electrochemical analysis was performed to evaluate the CO 2 electro-reduction property of the hybrid structures using an H-type cell in a 0.5 M choline chloride electrolyte. The hybridization of MoSe 2 enhanced the CO 2 electro-reduction properties in the NiCo 2 O 4 material in terms of high current density, low overpotential, smaller equivalent series resistance, charge transfer resistance, and increased electrochemical surface area. These excellent supercapacitors and CO 2 electro-reduction performance provide valuable insights into the design and optimization of nonprecious hybrid materials for multifunctional applications and render a viable approach to enhance the internal properties of various materials in the future. KEYWORDS: supercapacitors, CO 2 electro-reduction, NiCo 2 O 4 /WSe 2 , NiCo 2 O 4 /MoSe 2 , diffusive-and surface-controlled processes, core−ring structure
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.