In the present work, LiMn2O4 thin films have been prepared by pulsed laser deposition on stainless steel substrates. The films deposited at 400 degrees C and 200m Torr of oxygen were mainly composed of nano-crystals less than 100nm and their agglomerates. Three different electrochemical methods including CV, EIS and PITT were applied to measure the overall Li+-ion diffusion coefficients and charge-transfer resistances at various potentials from 3.85 to 4.5V. The Li+ diffusion coefficients were in the range of 10(-12) to 10(-10) cm(2) s(-1), depending on the potentials. It was found that the charge-transfer resistances decreased with the increase of potentials. Especially, relatively high diffusion coefficients and low charge-transfer resistances were observed above 4.2 V. (c) 2008 Elsevier B.V. All rights reserved.