Abstract
The pursuit for high-performance supercapacitor electrodes has received considerable interest, fueled by the urgent need for reliable energy storage solutions in the face of the impending exhaustion of fossil fuels and the necessary transition towards renewable resources. Herein, CoWO4/MWCNT nanocomposite (NCs) are grown on Ni-foam substrate via a facile hydrothermal process. The CoWO4 nanoparticles (NPs) anchored with 1D-MWCNT on the Ni-foam substrate were confirmed through XRD, FT-IR, and SEM analysis. The XRD analysis showcased CoWO4 NP size of about 54 nm; also, the SEM findings demonstrated 20.6 ± 4 nm-sized aggregated CoWO4 NPs. Interestingly, the CoWO4/MWCNT NCs exhibited a high specific capacity of 115 C g−1 at 1 Ag−1, with 98% retention even after 5000 cycles at 5 A g−1. Notably, the dielectric properties were studied, showing a dielectric constant of 73.56 for CoWO4 and 82.24 for CoWO4/MWCNT at 1 MHz, suggesting potential for ferroelectric applications.
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V. Saravanakumar: investigation, writing—original draft; V. J. Vijayalakshmi: writing—review and editing, supervision. S. Seenivasan: conceptualization, data curation. Dhinesh Subramanian: data analysis, software investigation.
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Saravanakumar, V., Vijayalakshmi, V.J., Seenivasan, S. et al. Novel synthesis of CoWO4 supported on 1D-MWCNT nanocomposites enhancing dielectric properties for supercapacitor electrodes. Ionics (2024). https://doi.org/10.1007/s11581-024-05673-4
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DOI: https://doi.org/10.1007/s11581-024-05673-4