The "Oielectric/Metal/Oielectric" (OMO) stacked films being used as transparent and conductive (TC) electrodes, have demonstrated excellent application in the ElectroChromic (EC) process and devices. In this work, multilayers (IAI) made of 50 nm of Indium Tin Oxide (IT0)/5 nm of metallic sil ver (Ag)/30 nm of ITO that exhibit band gap, low resistance of 7.4 Q and the high figure of merit of 9.9 x 10 3 Q 1 were introduced in a complete five layer Glass/IAI/NiOx/LlCIO4 PC PMMA/WO3/IAI/Glass ElectroChromic De vice (ECO). The single IAI electrode as well as the two actives EC layers Glass/IAI/Niûx and Glass/IAI{WO 3 were firstly characterized for their TC and EC properties respectively. Then, the EC properties of the complete five layer ECO were analyzed. Fast response time (2.02 s for the bleaching and 225 s for complete coloration), wide optical modulation in the visible light region (-55% at 550 nm), long lifetime (more than 6000 s), large capacity and good stability as well as high coloration efficiency (31.7 cm 2 C 1) were obtained The improved EC performance of ECO were related to the good electrical and optical properties of IAI electrode.