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- W2067234545 abstract "The TiO2 nanofibers and nanoparticles are prepared by electrospinning and molten salt method, respectively. The materials are characterized by X-ray diffraction scanning electron microscopy (SEM), high resolution transmission electron microscopy (HRTEM) and a thermal analysis. The SEM and TEM studies showed that fibers were of average diameter ∼100 nm and composed of nanocrystallites of size 10–20 nm. Electrochemical properties of the materials are evaluated using cyclic voltammetry, galvanostatic cycling and electrochemical impedance spectroscopy. Cyclic voltammetric studies show a hysteresis (ΔV) between the cathodic and the anodic peak potentials for TiO2 nanofibers and nanoparticles (sizes ∼15–30 nm) are in the range, 0.23–0.30 V and a redox couple Ti4+/3+ around ∼1.74/2.0 V. Electrochemical cycling results revealed that the TiO2 nanofibers have lower capacity fading compared to that of the nanoparticles. The capacity fading for 2–50 cycles was ∼23% for nanofibers, which was nearly one-third of that of corresponding nanoparticles (∼63%). We discussed the effect of particle size on hysteresis and cycling performance of TiO2 nanoparticles. Impedance analysis of TiO2 nanofibers and nanoparticles during first discharge cycle is analyzed and interpreted." @default.
- W2067234545 created "2016-06-24" @default.
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- W2067234545 date "2010-03-01" @default.
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- W2067234545 title "Preparation and electrochemical studies of electrospun TiO2 nanofibers and molten salt method nanoparticles" @default.
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- W2067234545 doi "https://doi.org/10.1016/j.electacta.2009.12.095" @default.
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