Loading...
Eco-friendly synthesis and electrochemical performance of nickel-cobalt-copper layered double hydroxide electrode for high-performance supercapacitors
Khoshsorour, R. Mokhtari, Z. Mehrpooya, M. Ganjali, M.R.
Khoshsorour, R.
Mokhtari, Z.
Mehrpooya, M.
Ganjali, M.R.
Publication Date
2026-06-05
End of Embargo
Supervisor
Rights
© 2026 The Author(s). This is the Author Accepted Manuscript of the article distributed under the Creative Commons CC-BY license (https://creativecommons.org/licenses/by/4.0) in accordance with the University of Bradford Rights Retention Policy.
Peer-Reviewed
Yes
Open Access status
openAccess
Accepted for publication
2026-05-09
Institution
Department
Awarded
Embargo end date
Additional title
Abstract
In the present study, a ternary nickel-cobalt-copper layered double hydroxide (NiCoCu-LDH) was prepared directly on nickel foam using an environmentally friendly and straightforward electrochemical cyclic voltammetry approach, aiming at high-performance supercapacitor applications. The effects of varying Ni: Co: Cu molar ratios and synthesis cycle numbers on the structural and electrochemical properties of the material were systematically investigated. Characterization by Scanning electron microscopy and X-ray diffraction verified the successful creation of a uniform nanoscale layered morphology with well-defined crystalline phases corresponding to Ni-, Co-, and Cu-based LDHs. Among all tested formulations, the 1:1:1 composition synthesized over 15 CV cycles delivered the best performance, attaining a notably specific capacitance of 2012 F g− 1 at 1 A g− 1, retaining 32% of this value at 100 A g− 1, and achieving at 1 A g− 1 energy density of 47 Wh kg− 1 at a power density of 205 W kg− 1. The electrode also exhibited exceptional Cycle-life stability, maintaining 97.7% of its initial capacitance after 1000 cycles at 50 A g− 1. Electrochemical impedance spectroscopy measurements revealed a low charge-transfer resistance, thereby confirming that the incorporation of copper improved the electrical conductivity of the material. These results position the NiCoCu-LDH electrode as a viable option for future high-power, high-energy supercapacitor technologies. The environmental compatibility of the NiCoCu-LDH synthesis method was evaluated and confirmed using the Analytical Eco-Scale score (score = 73).
Version
Published version
Citation
Khoshsorour R, Mokhtari Z, Mehrpooya M et al (2026) Eco-friendly synthesis and electrochemical performance of nickel-cobalt-copper layered double hydroxide electrode for high-performance supercapacitors. Journal of Applied Electrochemistry. 56: 131.
Link to publisher’s version
Link to published version
Link to Version of Record
Type
Article