INSIGHTS INTO THE STRUCTURAL, MORPHOLOGICAL, AND OPTICAL PROPERTIES OF V2O5 CATHODE MATERIAL SYNTHESIZED BY SELF-PROPAGATING COMBUSTION METHOD UNDER VARIED ANNEALING TEMPERATURES; [Pembelajaran ke atas Ciri-Ciri Struktur, Morfologi, dan Optik V2O5 yang Disintesis Melalui Kaedah Pembakaran yang Menyebar Sendiri di Bawah Pelbagai Suhu Pemanasan]

• Published in: Malaysian Journal of Analytical Sciences
• Main Author: Mustafa M.F.; Shariamin M.B.; Mastuli M.S.; Osman Z.; Mahat A.M.
• Format: Article
• Language: English
• Published: Malaysian Society of Analytical Sciences 2024
• Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85188731109&partnerID=40&md5=990fbb50730eef28ba96cf8e3ba9fafa

In this study, we report the novel synthesis of V2O5 cathode material utilizing the self-propagating combustion (SPC) method, marking the first-ever successful application of this technique for V2O5 production. Nonetheless, a thorough examination of the synthesis of V2O5 cathode material is required, with a special emphasis on the impact of annealing temperatures. The insufficient examination of the structural, morphological, and optical properties of V2O5 produced by the self-propagating combustion method in the current literature impedes the capacity to enhance its synthesis for application in energy storage devices, catalytic systems, and optoelectronic devices. In order to close this information gap, this study will carefully investigate how different annealing temperatures affect the final V2O5 material properties by providing comprehensive insights into the structural, morphological, and optical properties of V2O5 at varying annealing temperatures. The thermal profile was studied using Simultaneous Thermal Analysis (STA) providing measurement of multiple thermal properties of the sample as a function of time or temperature. The structural characterization was carried out using X-ray diffraction (XRD) analysis, revealing the crystal structure and phase purity of the synthesized V2O5 samples. Field emission scanning electron microscopy (FESEM) was employed to examine the morphological features, including particle size, shape, and surface morphology. Additionally, Energy Dispersive X-ray Spectroscopy (EDX) provides elemental composition to further substantiating the synthesis method’s efficacy. The optical properties were investigated through UV-Visible (UV-Vis) spectroscopy, providing information on the bandgap energy and optical absorption behavior of the synthesized V2O5. The results revealed that the annealing temperature significantly influenced the structural, morphological, and optical properties of V2O5. With increasing annealing temperature, the crystallinity and phase purity of V2O5 improved. The morphological analysis indicated variations in particle size, shape, and surface texture as a function of annealing temperature. Moreover, the optical characterization demonstrated that the annealing process influenced the bandgap energy and optical absorption properties of V2O5. In this study, it was found that, the optimum annealing temperature is at 600oC, which gives a single-phase crystal structure with uniform thickness of nano-sheets like appearance. © 2024, Malaysian Society of Analytical Sciences. All rights reserved.