Enhanced electrochromism in gyroid-structured vanadium pentoxide.

Authors :: Scherer MR
Li L
Cunha PM
Scherman OA
Steiner U
Source :: Advanced materials (Deerfield Beach, Fla.) [Adv Mater] 2012 Mar 02; Vol. 24 (9), pp. 1217-21. Date of Electronic Publication: 2012 Jan 30.
Publication Year :: 2012
Abstract: Manufacturing V(2)O(5) in a 3D periodic highly interconnected gyroid structure on the 10 nm length scale is shown to lead to a significant electrochromic performance enhancement. The structured devices surpass previous inorganic electrochromic materials in all relevant parameters: the switching speed, coloration contrast, and composite coloration efficiency. In particular, the 85 ms switching speed lies within a factor of two of video rate. Enhanced ion intercalation into the gyroid morphology can be extended to other transition-metal oxides and is therefore promising for lithium ion batteries, supercapacitors, and sensors.<br /> (Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.)