Amorphous V–O–C composite nanofibers electrospun from solution precursors as binder- and conductive additive-free electrodes for supercapacitors with outstanding performance
MetadataShow full item record
Flexible V–O–C composite nanofibers were fabricated from solution precursors via electrospinning and were investigated as free-standing and additive-free film electrodes for supercapacitors. Specifically, composite nanofibers (V0, V5, V10 and V20) with different vanadyl acetylacetonate (VO(acac)2) contents of 0, 5, 10 and 20 wt% with respect to polyacrylonitrile (PAN) were prepared. The composite nanofibers were comparatively studied using XRD, Raman spectroscopy, XPS, N2 adsorption–desorption, FE-SEM, TEM and S-TEM. The vanadium element was found to be well-dispersed in the carbon nanofibers, free from the formation of an aggregated crystalline phase, even in the case of V20. A specific surface area of 587.9 m2 g-1 was reached for V10 after calcination, which is approximately twice that of the vanadium-free carbon nanofibers (V0, 300.9 m2 g-1). To perform as an electrode for supercapacitors in an aqueous electrolyte, the V10 film delivered a specific capacitance of 463 F g-1 at 1 A g-1. V10 was also able to retain a specific capacitance of 380 F g-1, even at a current density of 10 A g-1. Additionally, very stable cycling stability was achieved, maintaining an outstanding specific capacitance of 400 F g-1 at 5 A g-1 after charge–discharge cycling 5000 times. Thus, V–O–C composite nanofibers are highly attractive electrode materials for flexible, high-power, thin film energy storage devices and applications.
Showing items related by title, author, creator and subject.
Facile spray-drying/pyrolysis synthesis of intertwined SiO@CNFs&G composites as superior anode materials for Li-ion batteriesHou, X.; Wang, J.; Zhang, M.; Liu, X.; Shao, Zongping; Li, W.; Hu, S. (2014)A silicon monoxide/carbon nanofibers/graphite (SiO@CNFs&G) composite with outstanding electrochemistry performance has been easily synthesized using a simple method based on spray drying in combination with a subsequent ...
Nonenzymatic glucose sensor based on renewable electrospun Ni nanoparticle-loaded carbon nanofiber paste electrodeLiu, Yang; Teng, H.; Hou, H.; You, T. (2009)A novel non enzymatic glucose sensor was developed based on the renewable Ni nanoparticle-loaded carbon nanofiber paste (NiCFP) electrode. The NiCF nano composite was prepared by combination of electro spinning technique ...
Two-Step Fabrication of Li<inf>4</inf>Ti<inf>5</inf>O<inf>12</inf>-Coated Carbon Nanofibers as a Flexible Film Electrode for High-Power Lithium-Ion BatteriesZhang, Z.; Deng, X.; Sunarso, J.; Cai, R.; Chu, S.; Miao, J.; Zhou, W.; Shao, Zongping (2017)© 2017 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.A self-standing nonwoven flexible Li4Ti5O12/carbon nanofiber composite (denoted LTO/CNF) was synthesized by using a facile method involving the electrospinning fabrication ...