We have developed a new method to directly fabricate lithium cobalt oxide (LiCoO2) films onto porous films by an electrodeposition method in solutions at low temperature. A set of porous substrate films consisting of a PTFE membrane-filter and paper was placed between a LiOH solution and a CoSO4 solution. Cobalt compounds were deposited on the substrates under electrical currents of similar to1 mA/cm(2) using carbon electrodes. As a result, we found that LiCoO2 films on the porous filter were successfully fabricated at 120 degreesC. Furthermore, the LiCoO2 films did not cover the entire substrate, but formed only in the shape of the anode. (C) 2002 Elsevier Science B.V. All rights reserved.