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Enhanced Electrochromism in Gyroid‐Structured Vanadium Pentoxide
Author(s) -
Scherer Maik R. J.,
Li Li,
Cunha Pedro M. S.,
Scherman Oren A.,
Steiner Ullrich
Publication year - 2012
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201104272
Subject(s) - electrochromism , gyroid , pentoxide , materials science , vanadium , electrochromic devices , lithium (medication) , nanotechnology , intercalation (chemistry) , optoelectronics , chemical engineering , composite material , electrode , inorganic chemistry , copolymer , metallurgy , chemistry , medicine , engineering , endocrinology , polymer
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.