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Int. J. Electroactive Mater. 1 (2013) 50-54

Fabrication of Thin LiMn2O4 Electrode on the Li1.5Al0.5Ge1.5(PO4)3 Solid Electrolyte by a Sol-Gel Method

Masashi Kotobuki*

Material and Environmental engineering, Hakodate Natinal College of Technology, Hokkaido, Japan
*Email Address :

Abstract : In order to fabricate a thin film battery made up of Li1.5Al0.5Ge1.5(PO4)3 (LAGP) solid electrolyte and LiMn2O4 cathode, the PVP (poly vinylpyrrolidone) sol-gel method combined with spin-coating method is applied. From XRD and Raman spectrum, it is confirmed that LiMn2O4 thin film is successfully prepared on the LAGP, although some defects can be observed in the thin film. A cyclic voltammogram of the thin film reveals clear redox peaks corresponding to Mn3+/4+ in the LiMn2O4, implying possible application of the PVP sol-gel method combined with spin-coating to the thin film battery preparation. The discharge capacity of the film is 42 mA h g-1 at 0.1 C.

Keywords : Thin film battery,Li1.5Al0.5Ge1.5(PO4)3 solid electrolyte,all-solid-state battery,sol-gel metho