Abstract
Using LiNO 3 and Mn(Ac) 2 as raw materials, ultrasonic spray deposition (USD) technique was used to fabricate LiMn 2O 4 films on platinum substrate at different substrate temperatures from 310 to 390 °C. The prepared thick films were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). Electrochemical performance of the USD-derived films was also evaluated with LiMn 2O 4/Li cells. It is found that all of the LiMn 2O 4 films are porous and composed of orderly oriented columnar particles. The substrate temperature affects the fine microstructure of the columnar particles. The film prepared at 360 °C substrate temperature give rise to best electrochemical behavior.
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