In this work, we report electrochromic properties of polycrystalline WO(3) nanowire electrodes fabricated on an indium tin oxide (ITO)-coated substrate by electrospinning method. The electrochromic and electrical properties of the electrospun WO(3) nanowire electrodes are investigated and compared with those of conventional WO(3) thin film electrodes. As a result, the one-dimensional WO(3) nanowires show faster charge transfer and optical responses with a bleaching time of 1.0 s and a coloring time of 4.2 s than the thin film electrodes. The coloration efficiency of the electrospun WO(3) nanowires is also greater (56 cm(2)/C) by 21% than the thin film along with an improved memory effect after coloring process. (C) 2009 Elsevier B.V. All rights reserved.