Investigating the Linum usitatisimum mucilage synergistic amalgamation of metal oxide electrodes for super-capacitive applications

• Published in: Journal of the Indian Chemical Society 2024-12, Vol.101 (12), p.101477, Article 101477
• Main Authors: Courage, Uruwah I., Alghamdi, Nawal, Ikhioya, Imosobomeh L., Ochai-Ejeh, Faith U., Aisida, Samson O., Nwanya, Assumpta C., Ugwoke, Paulinus E., Ezema, Fabian I.
• Format: Article
• Language: English
• Subjects: Capacitances; Coulombic; Electrode; flax seeds; Nickel foam
• ISSN: 0019-4522
• DOI: 10.1016/j.jics.2024.101477

The study's focus is on developing and evaluating Linum usitatissimum mucilage-based nanoparticles integrated into the metal oxide electrode for super-capacitive applications. The energy bandgap of the electrode is L.U-2.741 eV, FeO4-2.177 eV, CoO4-2.082 eV, and FeCo2O4-1.586 eV. The calculated crystallite sizes for the materials are Fe3O4-L.U (11.77 nm), Co3O4-L.U (18.01) and FeCo2O4-L.U (16.67). The micrograph of the material shows a cluster-like structure formed by the agglomeration of linum usitatisimum. The absorption peak was prominent at 219 nm and to gradually decrease at about 317 nm. If the absorbance decreases with wavelength. The potential windows (−0.4 to 0.3 V for L.U, Fe3O4-L.U, and Co3O4-L.U, and −0.6 to 0.1 V for FeCoO3) displayed prominent peaks in electrode reduction/oxidation, showing strong pseudo-capacitive performance. The estimated specific capacitances for L.U are 6.74, 3.18, 1.82 and 1.16 F/g. For Fe3O4-L.U the specific capacitances are 16.9, 11.1, 7.11 and 3.75 F/g while for that of Co3O4-L.U are 21.7, 12.2, 7.68 and 3.98 F/g. The estimated specific capacitances for FeCo2O4-L.U are 10.2, 6.46, 3.95 and 2.00 F/g. The GCD plot of Linum Usitatissimum and FeCoO3-L.U shows coulombic efficiency of 92 % and 97 %, respectively, showing their suitability for supercapacitor applications. [Display omitted] •The study's focus is on developing and evaluating Linum usitatissimum mucilage-based nanoparticles.•The calculated crystallite sizes for the materials are Fe3O4-L.U (11.77 nm), Co3O4-L.U (18.01) and FeCo2O4-L.U (16.67).•The micrograph of the material shows a cluster-like structure formed by the agglomeration of linum usitatisimum mucilage.