𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Ageing of electrochromic WO3 coatings characterized by electrochemical impedance spectroscopy

✍ Scribed by Pehlivan, Esat ;Niklasson, Gunnar A. ;Granqvist, Claes-Göran ;Georén, Peter

Publisher
John Wiley and Sons
Year
2010
Tongue
English
Weight
447 KB
Volume
207
Category
Article
ISSN
0031-8965

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

We have developed a method for characterization of ageing of electrochromic materials by electrochemical impedance spectroscopy (EIS). Electrochromic WO~3~ thin films have been electrochemically cycled in propionic acid electrolyte and probed by EIS and optical measurements. A very small amount of optical degradation was observed in both the bleached and coloured states. The samples exhibited a few hundred times higher impedance in the bleached state than in the coloured state. It was observed that, in the bleached state, impedance values at low frequencies increased significantly with increasing number of cycles.

📜 SIMILAR VOLUMES

A study of thin anodic WO3 films by elec
A study of thin anodic WO3 films by electrochemical impedance spectroscopy
✍ Sonia R. Biaggio; Romeu C. Rocha-Filho; Jorge R. Vilche; Francisco E. Varela; Li 📂 Article 📅 1997 🏛 Elsevier Science 🌐 English ⚖ 849 KB

The properties of thin anodic passive films potentiostatically formed (1 V I Ef s 5 V us see) on polycrystalline tungsten in aqueous H3P04, HzS04, HNOs and HCl04 solutions (pH z 1.3) were studied using electrochemical impedance spectroscopy at room temperature. The data were analysed with a transfer

Characterization of electroactive polyme
Characterization of electroactive polymer layers by electrochemical impedance spectroscopy (EIS)
✍ Marco M. Musiani 📂 Article 📅 1990 🏛 Elsevier Science 🌐 English ⚖ 704 KB

## ES investigations carried out on either redox or conducting polymer layers are reviewed. The models proposed for redox polymers in contact with solutions with or without a redox couple and their experimental verifications are discussed. The literature relative to conducting polymers such as pol