Dual Functionality of Dichalcogenide-Supported Pentagon Core–Hexagon Ring-Structured NiCo2O4 Nanoplates: An Effective Hybridization for Tuning of a Diffused- to a Surface-Controlled Process and Boosting of CO2 Electrocatalysis

• DOI: 10.1021/acsaem.2c01880
• Publication Date: 2022-08-04T16:44:03Z
• Authors: Johnbosco Yesuraj; Jinsun Kim; Rui Yang; Kibum Kim
• Keywords: Overpotential; Power density

Rationally fabricating the hybrid nanostructures with a distinctive surface and internal properties is substantial due to their multifunctional features in energy storage catalysis applications. Generally, battery-like supercapacitor materials experience low density inferior cyclic stability issues intercalation/deintercalation process. To address this problem, dichalcogenides (WSe2 MoSe2) were hybridized material (NiCo2O4), which effectively changed diffused-controlled surface-controlled process enhanced features. The pentagon core–hexagon ring-structured NiCo2O4 nanoplate MoSe2 structures presents excellent electrochemical specific capacity of 857 C g–1 at 1 A retains 98% initial after 5000 cycles 30 g–1, higher than that pure NiCo2O4/WSe2 materials. asymmetric device (NiCo2O4/MoSe2//activated carbon) provides an 69 W h kg–1 power 1280 withstands 95% 10,000 g–1. Moreover, preliminary analysis was performed evaluate CO2 electro-reduction property using H-type cell 0.5 M choline chloride electrolyte. hybridization terms high current density, overpotential, smaller equivalent series resistance, charge transfer increased area. These supercapacitors performance provide valuable insights into design optimization non-precious for applications render viable approach enhance various future.