Experimental Analysis of High Conductivity Solid-State Electrolyte Li7La3Zr2O12 (LLZO) for Li-Ion Battery

The solid electrolyte is a promising electrolyte for Li-ion batteries. Lithium lanthanum zirconate i.e. t-Li7La3Zr2O12 (LLZO) solid electrolyte was prepared to study the phase analysis through XRD, reactions involved through thermal dilatometry, morphology through field emission SEM, ionic conductivity through electrochemical impedance spectroscopy, and battery feasibility through galvanostatic charge/discharge. The ionic conductivity of LLZO, which has been reported, is 10-5-10-7 S/cm at room temperature. The calculated ionic conductivity of our sample i.e. Li7La3Zr2012 (LLZO) is 10–4 S/cm at room temperature. A working cell has been fabricated using a solid-state Li7La3Zr2012 (LLZO) electrolyte, which showed an initial specific capacity of 175 mAh/g