Metal-organic framework-derived Nickle Tellurideporous structured composites electrode materials for asymmetric supercapacitor application

Abstract

Using interfacial architecture to modify the associated physicochemical characteristics of electro-active materials for supercapacitors (SC) is a successful tactic. In this study, a straightforward hydrothermal approach was used to insert ZIF-67 into a core/shell constructed NiTe with a 3D hierarchical design. Because of the well thought-out core/shell system and the very effective synergy interactions between several parts. The NiTe electrode that was fabricated has remarkable cycling stability, retaining 93.5% of its initial capacitance after performing 5000 cycles. Additionally, it displays a specific capacitance of 1521 Fg−1 when tested at a current density of 1 Ag−1. An asymmetric supercapacitor with NiTe as the working electrode and activated carbon (AC) as the negative electrode in 3 M KOH liquid is put together in order to increase energy density and widen the potential window. Asymmetric supercapacitor has a high energy density of 45.3 Whkg−1 at a power density of 5689.1 Wkg−1 and can operate in the voltage range of 0–1.8 V. Another feature of the asymmetric AC/NiTe supercapacitor is its capacity for high rates and cycle endurance.