Spherical LiZnBO3: Structural, Optical and Electrochemical Properties
Veena Ragupathi, K. Srimathi, P. Panigrahi, N. Ganapathi Subramaniam
Materials Science for Energy Technologies
Spherical – LiZnBO3 material is synthesized by sol-gel technique and the structural, optical, and electrochemical properties of LiZnBO3 are analyzed. X-ray diffraction result reveals the formation of α-LiZnBO3. Scanning electron microscope and transmission electron microscope image shows spherical morphology and the size of particle is approximetly 80 nm. Absorbance spectra reveal the characteristics band edge of LiZnBO3 is noticed around 210 nm and the band gap is found to be 5.57 eV. Defect-induced intrinsic luminescence is observed in the LiZnBO3 material. The calculated electrical conductivity of LiZnBO3 is 9.52 x 10-9 S/cm. Charge–discharge measurement indicates that the sol-gel synthesized LiZnBO3 delivers a first charge capacity of 78.82 mAh g-1 at C/10 rate and yields the discharge capacity of 7 mAh g-1at the 10th cycle. An improved capacity is expected to be reached by further reduction in particle size, doping and conductive carbon coating.
Fluorescence, Photoluminescence, Materials