A solid polymer electrolyte (SPE) film consisting of poly(ethylene oxide) (PEO) with magnesium chloride as electrolytic salt and B 2 O 3 as the filler has been prepared by solution casting technique. The polymeric film was flexible and self-standing with proper mechanical strength and studied for application in a solid-state rechargeable magnesium battery. The interactions between the filler and PEO chains are studied by differential scanning calorimeter and Fourier transform infrared techniques. Composition of SPE is optimized, and maximum conductivity is obtained at 2 wt% B 2 O 3 . Filler seems to increase the number of free magnesium cations by decoordinating the bond between magnesium cations and ether oxygen of PEO. Cyclic voltammetry results show the reversible capability of magnesium electrode. Solid-state magnesium cell employing magnesium anode, SPE, and manganese oxide was assembled, and its open circuit voltage is found to be 1.9 V.

No abstract

No abstract

No abstract

LiCo 0.2 Fe 0.8 PO 4 cathode material was prepared by succinic assisted soft combustion technique. This method of synthesis ensures homogeneity of the precursor material, improved activity and crystal grain size. Calcinations at high temperature confirm the purity of the cathode material. The aim of this work is to investigate the effects of cobalt substitution in LiFePO 4 . The structural characterization of the products was analysed by the X-ray powder diffraction. Conductivity measurements were made to characterize the transport property of the cathode material. Fourier transform infrared spectroscopy and differential scanning calorimeter and thermogravimetry analysis have been studied to investigate the functional group present and the phase transition involved in the sample, respectively.