Microstructural and supercapacitive properties of one-dimensional vanadium pentoxide nanowires synthesized by hydrothermal method

• Published in: Applied physics. A, Materials science & processing Vol. 124; no. 2; pp. 1 - 7
• Main Authors: Dhananjaya, M., Prakash, N. Guru, Narayana, A. Lakshmi, Hussain, O. M.
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.02.2018; Springer Nature B.V
• Subjects: Applied physics; Capacitance; Characterization and Evaluation of Materials; Chemical composition; Chemical synthesis; Condensed Matter Physics; Machines; Manufacturing; Materials science; Micrometers; Morphology; Nanotechnology; Nanowires; Optical and Electronic Materials; Physics; Physics and Astronomy; Processes; Reaction time; Surfaces and Interfaces; Thin Films; Vanadium pentoxide
• ISSN: 0947-8396; 1432-0630
• DOI: 10.1007/s00339-017-1522-0

Phase pure one-dimensional (1D) V 2 O 5 nanowires (NWs) were synthesized by simple and cost-effective hydrothermal synthesis based on the reaction time varying from 10 to 50 h. The structural and surface morphology with elemental composition of the NWs was characterized through XRD, Raman and SEM, and TEM with EDX, respectively. The XRD and Raman studies exhibited that the obtained nanowires at reaction time of 35 h confirm orthorhombic V 2 O 5 phase with predominant (001) orientation. SEM and TEM results show the 1D V 2 O 5 NWs with 1D morphology and smooth surface with average diameter of 60 nm and length of several micrometers. The elemental composition was estimated from EDX spectrum. The 1D V 2 O 5 NWs exhibited high specific capacitance of 702 F g −1 at current density of 1 mA cm −2 with excellent capacitance retention even after 1000 cycles.