Structural and impedance spectroscopic analysis of LiBiVO4

Lithium ion batteries have been attracting considerable in nest worldwide in the past few years in the field of rechargeable batteries because they posses high energy density, long cycle life, good safety, and wide range of working temperatures. Lithium batteries based on vanadates such as LiNiVO4, and LiCoVO4 have gained a new interest since such material based electrodes display a large Li acceptance/removal at low voltages. A new electrode material LiBiVO4 has been prepared using solid state reaction method. The formation of the compound has been characterized by XRD analysis. The Laser Raman Spectroscopy reveals the structural and phase analysis of LiBiVO4. The electrical characterization has been carried out using the Impedance spectroscopy method in the frequency range of 50 Hz to 5 MHz. ne bulk resistance of the material has been extracted from the impedance analysis and it is found to be 4.96 x 10(-7) Omega cm(-1) at 473 K. The modulus peak maximum shifts to higher frequency with increase in temperature and broad nature of the peaks indicate the non-debye nature of the material.