Abstract
LiFePO4 has been synthesized by hydrothermal synthesis. A 2-in. sputtering target has been prepared using synthesized powder and employed for the deposition of LiFePO4 films by radio frequency magnetron sputtering. Microstructural properties have been studied by using X-ray diffraction, Raman spectroscopy, and atomic force microscope. The films deposited at 350 °C with subsequent annealing at 600 °C for 4 h exhibited well-crystallized peaks along with (101) predominant orientation which corresponds to orthorhombic olivine-type structure with Pnma space group. The electrochemical properties have been studied for films in aqueous as well as in non-aqueous media. Both the electrochemical cells at same current density of 20 μA/cm2 delivered the same initial discharge capacity around 38 μAh/cm2 μm. The Li//LiFePO4 cell exhibited good cycling stability for the first 20 cycles.
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Authors would like to thank University Grants Commission, New Delhi for providing financial assistance.
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Rosaiah, P., Hussain, O.M. Microstructural and electrochemical properties of rf-sputtered LiFePO4 thin films. Ionics 20, 1095–1101 (2014). https://doi.org/10.1007/s11581-014-1066-7
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DOI: https://doi.org/10.1007/s11581-014-1066-7