Copyright (c) 2026 Mohamed ibrahim M

This work is licensed under a Creative Commons Attribution 4.0 International License.
Synergistic Effects of Silver Incorporation on the Electrochemical Behaviour of NiMoO4 Nanostructures
Corresponding Author(s) : M. Mohamed Ibrahim
Asian Journal of Chemistry,
Vol. 38 No. 6 (2026): Vol. 38 Issue No 6, 2026
Abstract
Electrode materials for electrochemical energy storage require high capacitance, rapid charge–discharge capability and excellent cycling stability. In present study, the pure and Ag-incorporated NiMoO4 nanostructures containing 3, 5 and 7 wt.% Ag were synthesised via a simple co-precipitation method and systematically investigated. X-ray diffraction confirmed the formation of phase-pure monoclinic NiMoO4 without secondary Ag phases, indicating successful Ag incorporation. SEM analysis showed improved particle dispersion and enhanced porosity, contributing to higher electrochemically active surface area and improved charge transport. Raman and XPS studies revealed Ag-induced lattice distortion and oxygen-vacancy-rich defect sites, which facilitate electron transfer and redox activity. The Ag (7 wt.%)-NiMoO4 electrode exhibited enhanced electrochemical performance, delivering specific capacitances of 642.12 F g–1 (CV) and 1066.12 F g–1 (GCD), along with excellent cycling stability of 97.81% capacitance retention after 5000 cycles. The enhanced conductivity, defect-mediated charge transport and optimised ion diffusion synergistically contribute to improve the performance.
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