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Designing hierarchical Zr-Co MOF nanostructures on CuO nanowires electrode for energy storage devices
Journal article   Peer reviewed

Designing hierarchical Zr-Co MOF nanostructures on CuO nanowires electrode for energy storage devices

Muhammad Ahmad, Tehseen Nawaz, Iftikhar Hussain, Xi Chen, Yassine Eddahani, Rajat Walia, Ci Wang, Karanpal Singh, Bhargav Akkinepally and Kaili Zhang
Sustainable Materials and Technologies, v 47, e01848
15 Apr 2026
DOI: https://doi.org/10.1016/j.susmat.2025.e01848

Abstract

Energy storage devices Hybrid supercapacitor Metal oxide MOF
Metal-organic frameworks (MOFs) offer significant benefits for enhancing the characteristics and architecture of resultant metal-based active materials. Our study introduces a unique electrode material, Zr-Co oxide@CuO, derived from a Zr-Co MOF precursor combined with a pre-oxidized Cu mesh. By anchoring n-type Zr-Co oxide onto a p-type CuO nanowire scaffold, we created a p-n heterostructure that synergistically combines capacitive and diffusive charge behaviours along with wide potential window (1.2 V), resulting in a composite with optimized electrochemical performance. Hybrid supercapacitor (HSC) device featuring the Zr-Co oxide@CuO as the positive and reduced graphene oxide as the negative electrode exhibited excellent energy and power densities. Additionally, density functional theory (DFT) calculations were utilized to analyse the properties of the hybrid electrode material. The HSC device demonstrated a high energy density of 53 Wh kg−1 at a power density of 1.47 kW kg−1. In essence, the unidirectional and vertically oriented MOF-derived Zr-Co oxide@CuO electrode, with its distinguished electrochemical performance, holds potential for the development of advanced supercapacitor electrodes.

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