Mesoporous thin film TiO2 electrodes

✍ Scribed by L Kavan; J Rathouský; M Grätzel; V Shklover; A Zukal

• Publisher: Elsevier Science
• Year: 2001
• Tongue: English
• Weight: 414 KB
• Volume: 44-45
• Category: Article
• ISSN: 1387-1811
• DOI: 10.1016/s1387-1811(01)00246-3

✦ Synopsis

Thin layer electrodes (200±500 nm) of highly organized nanotextured anatase were prepared by hydrolysis of TiCl 4 in the presence of poly(alkylene oxide) block copolymer, Pluronic P-123, acting as a structure-directing agent. Electrochemical insertion of Li was studied in LiN(CF 3 SO 2 ) 2 ethylene carbonate dimethoxyethane. Cyclic voltammograms of these electrodes showed unusual occurrence of two pairs of cathodic/anodic peaks at 1.5 and 1.6 V vs. Li/Li . These peaks can serve as indicators of structural perfection of the mesoscopic skeleton; they diminish after mechanical or thermal destruction of the organized nanotexture.