Polyaniline as a reversibly switchable electrochromic material. (Reannouncement with new availability information). Technical report
Polyaniline is an interesting electrochromic material because its color can be changed from clear to green, to blue, and to purple by electrochemical oxidation. The structural transformations associated with these color changes are shown. One of the possible applications for polyaniline is to use it as the active material in electrochromic windows. An electrochromic window is a multi-layered device with the structure of a transparent rechargeable battery. A practical electrochromic window needs to have long color-cycling lifetime and good durability under solar radiation. This is a severe requirement because all layers of materials and interfaces between layers have to be durable under such electrochemical and photochemical stress. In this communication the authors report an initial study towards the construction of a polyaniline-based electrochromic window. They concerned themselves with only polyaniline coated on tin oxide glass. They tested such a half-cell in an aqueous electrolyte to see if this part of the electrochromic device can be made durable enough for electrochromic applications and to find useful designing principles for constructing good devices.
- Research Organization:
- Pennsylvania Univ., Philadelphia, PA (United States). Dept. of Chemistry
- OSTI ID:
- 80535
- Report Number(s):
- AD-A--233874/7/XAB; CNN: Contract N00014-90-J-1559
- Country of Publication:
- United States
- Language:
- English
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