Abstract
Bare Lithium Iron Phosphate (LiFePO4), Cu, La doped and Cu with La co-doped LiFePO4 composite materials have been prepared via polyol technique without further post heat treatment. The prepared bare and composite materials’ crystalline structure has been indexed an orthorhombic phase olivine structure with space group of Pnma. The functional group vibrations and surface morphology of the prepared materials has been observed using Fourier transfer infrared spectroscopy (FT-IR) and scanning electron microscopy (SEM) with EDX analyses. Magnetization measurements revealed that saturation magnetizations (Ms) of the metal doped samples are gradually increased than that of the pure LiFePO4. All the samples exhibit the spin-glass behaviour of magnetic materials.
Highlights
Nowadays, Nanostructure and Nanocrystalline materials have been widely used for different applications such as Energy storage device, Memory device, Bio-medical applications and so on [1, 2]
LiFePO4 composite materials prepared by polyol process without further heat treatment and special environment
All the diffraction peaks may be indexed to an orthorhombic olivine structure of LiFePO4 with Pnma space group (JCPDS No 83-2092) without any observable impurity phase
Summary
Nanostructure and Nanocrystalline materials have been widely used for different applications such as Energy storage device, Memory device, Bio-medical applications and so on [1, 2]. Lithium-ion batteries are one of the great solutions of energy storage sectors. In this regard, eco-friendly LiFePO4 materials is an attractive cathode material for lithium-ion batteries due to retained the full charge-discharge capacity of the materials and non-toxicity [3]. The LiFePO4 materials has been prepared by several methods via solid state reaction [4], sol-gel [5], carbothermal reduction [6], hydrothermal [7], co-precipitation [8], polyol process [9, 10], solvothermal method [11] etc. The polyol process is versatile method to produce the economic-energy efficient method compare to other methods. Polyol solvents act as a reducing agent as well as stabilized the prepared materials [9]
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