Solid Electrolytes for Lithium Batteries

The use of solid electrolytes to produce an all-solid-state lithium battery is regarded as one promising alterative for improved safety. In this work, the researchers synthesized cubic garnet-type ceramic electrolyte Li_6.75La₃Zr_1.75Ta_0.25O₁₂ (LLZTO) via the coprecipitation method. For the characterization, the phase content was determined using X-ray diffraction (XRD), morphology was obtained by using a scanning electron microscope (SEM), and conductivity was measured by AC impedance spectroscopy using a frequency response analyzer. The results showed that the room temperature total conductivity and activation energies of LLZTO were 7.2×10^-6 S/cm and 0.31-0.46 eV, respectively. Composite electrolytes were prepared by mixing LLZTO with a ceramic (Li_1.4Al_{0.4 See more See less}