The synthesis of pure nanostrip orthorhombic V 2 O 5 was carried out by a simple two-step procedure, with the formation of a vanadyl ethylene glycolate precursor and postcalcination treatment. The precursor and the final product were characterized for its phase and composition by powder X-ray diffraction, infrared spectroscopy, thermal analysis, and X-ray photoelectron spectroscopy. The morphological changes were investigated using field emission scanning electron microscopy and transmission electron microscopy. It was found that the individual strips have around the following dimensions: length, 1.3 µm; width, 332 nm; thickness, 45 nm. The electrochemical lithium intercalation and deintercalation of nanostrip V 2 O 5 was investigated by cyclic voltammetry, galvanostatic charge-discharge cycling, galvanostatic intermittent titration technique, and electrochemical impedance spectroscopy. From charge-discharge cycling, the initial discharge capacity of the nanostrip was found to be about 427 mAh g -1 . However, it decreased due to inherent phase changes on repeated cycling.

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This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.Porous Flower-like α-Fe 2 O 3 Nanostructure: A High Performance Anode Material for Lithium-ion Batteries

Porous α-Fe 2 O 3 nanostructures have been synthesized by sol-gel route. The effect of preparation temperature on the morphology, structure, and electrochemical stability upon cycling has been studied for supercapacitor application. The discharge capacitance of α-Fe 2 O 3 prepared at 300 °C is 193 F g −1 , when the electrodes are cycled in 0.5 M Na 2 SO 3 at a specific current of 1 A g −1 . The capacitance retention after 1,000 cycles is about 92 % of the initial capacitance at a current density of 2 A g −1 . The high discharge capacitance as well as stability of α-Fe 2 O 3 electrodes is attributed to large surface area and porosity of the material. There is a decrease in specific capacitance (SC) on increasing the preparation temperature. As iron oxides are inexpensive, the synthetic route adopted for α-Fe 2 O 3 in the present study is convenient and the SC is high with good cycling stability, the porous α-Fe 2 O 3 is a potential material for supercapacitors.

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Herein, in situ reduction of bismuth and graphene oxide was performed by a solvothermal method under a N2 atmosphere, and the resulting Bi/RGO nanocomposites were used as an anode material for Mg-ion batteries.

Electrodeposition of zinc on steel was obtained from acid chloride bath containing condensation products (CP) of 3,4,5-trimethoxy benzaldehyde (TMB) and chitosan (CTN). The effect of bath constituents, pH, current density and temperature on the nature of deposit was studied by Hull cell experiments. The bath composition and operating parameters were optimized. The adhesion, ductility and corrosion resistance of the deposits were discussed. Throwing power and current efficiency values under different plating conditions were measured. SEM photomicrographs of the deposit were taken to study the surface morphology. The inclusion of addition agent in the deposit was investigated from IR spectrum of the scrapped deposit. The consumption of brightener in the lab scale is 10 mLL -1 for 1000 amp-h.