Preparation of LiMn 2O 4 thin-film electrode on Li 1+ xAl xTi 2- x(PO 4) 3 NASICON-type solid electrolyte
An interface consisting of LiMn 2O 4 thin-film (1 μm thick) electrode and Li 1+ xAl xTi 2- x(PO 4) 3-based NASICON-type solid electrolyte (LTP) was prepared by a sol-gel coating method. The submicron-sized pores were involved in the thin film, and the porosity of the film was relatively high. The prepared solid-solid electrochemical interface was evaluated by cyclic voltammetry and galvanostatic charge-discharge test. Two reversible redox peaks were observed at 4.0 and 4.1 V versus Li/Li + in the cyclic voltammogram due to the redox of Mn 3+/4+. The LiMn 2O 4 thin-film electrode on LTP exhibited a discharge capacity of 80 mA h g -1 at 0.1 C rate.