Deposition of Li4Ti5O12 and LiMn2O4 films on the lithium-ion conductor of Li1.3Al0.3Ti1.7(PO4)3 sintered pellet

• Published in: Thin solid films Vol. 589; pp. 574 - 577
• Main Authors: Wu, Xian Ming, Chen, Shang, He, Ze Qiang, Chen, Shou Bin, Li, Run Xiu
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 31.08.2015
• Subjects: Annealing; Conductors (devices); Crystallization; Deposition; Lithium ion battery; Lithium manganese oxide; Lithium titanium oxide; Optimization; Pellets; Sintered pellet; Sintering; Solid electrolyte; Spray deposition; Thin films; Voltage; Thin films; Lithium ion battery; Lithium manganese oxide; Solid electrolyte; Lithium titanium oxide; Spray deposition; Sintered pellet
• ISSN: 0040-6090; 1879-2731
• DOI: 10.1016/j.tsf.2015.06.044

LiMn2O4 and Li4Ti5O12 films were deposited on the lithium-ion conductor of Li1.3Al0.3Ti1.7(PO4)3 sintered pellet by spray technique. The effect of annealing temperature, annealing time, Li:Ti and Li:Mn molar ratio on the phase and crystallization of the films were investigated with X-ray diffraction. The LiMn2O4/Li1.3Al0.3Ti1.7(PO4)3/Li4Ti5O12 thin-film lithium-ion battery using Li1.3Al0.3Ti1.7(PO4)3 sintered pellet as both electrolyte and substrate was also studied. The results show that the effect of annealing temperature, annealing time, Li:Ti and Li:Mn molar ratio has great effect on the phase and crystallization of Li4Ti5O12 and LiMn2O4 films deposited on the Li1.3Al0.3Ti1.7(PO4)3 sintered pellet. The optimal Li:Ti and Li:Mn molar ratio for the deposition of Li4Ti5O12 and LiMn2O4 films on Li1.3Al0.3Ti1.7(PO4)3 sintered pellet are 7.2:5 and 1.05:2, respectively. The optimal annealing temperature and time for the deposition of LiMn2O4 film on Li1.3Al0.3Ti1.7(PO4)3 sintered pellet are 650°C and 10min. While those for Li4Ti5O12 film are 700°C and 10min. The LiMn2O4/Li1.3Al0.3Ti1.7(PO4)3/Li4Ti5O12 thin-film battery offers a working voltage about 2.25V and can be easily cycled. •LiMn2O4 and Li4Ti5O12 films spray deposited on Li1.3Al0.3Ti1.7(PO4)3 sintered pellet•Film crystal phase depends on the spray solution composition and annealing conditions.•Prepared thin-film lithium-ion battery employs sintered pellet as electrolyte and substrate.•LiMn2O4/Li1.3Al0.3Ti1.7(PO4)3/Li4Ti5O12 thin film battery can be easily cycled.