Fabrication and Characterization of Li7La3Zr2O12 Thin Films for Lithium Ion Battery

Thin films of Li 7 La 3 Zr 2 O 12 were deposited on SrTiO 3 (100) and Sapphire (0001) substrates at room-temperature using a pulsed-laser-deposition technique. Detailed structural, compositional, optical, and electrochemical characterizations of the films were performed. The films deposited at room-temperature had amorphous structure, and exhibited a lithium-ion conductivity of 3.35 × 10 −7 S/cm. The effects of thermal annealing and pulsed laser annealing on the properties of the films were investigated. Pulsed laser annealed films were found to have a superior lithium-ion conductivity value of 7.36 × 10 −7 S/cm. Moreover, the Li 7 La 3 Zr 2 O 12 films were found to be electrochemically stable against lithium metal.