Webbläsaren som du använder stöds inte av denna webbplats. Alla versioner av Internet Explorer stöds inte längre, av oss eller Microsoft (läs mer här: * https://www.microsoft.com/en-us/microsoft-365/windows/end-of-ie-support).

Var god och använd en modern webbläsare för att ta del av denna webbplats, som t.ex. nyaste versioner av Edge, Chrome, Firefox eller Safari osv.

Electrochromic devices operating with electrolytes based on boronate ester compounds and various alkali metal salts

In English

Författare

  • Pierre-Yves Pennarun
  • Spiros Papaefthimiou
  • Panayiotis Yianoulis
  • Patric Jannasch

Summary, in English

Various polymer electrolytes based on boronate esters and different lithium and sodium salts have been evaluated in electrochromic (EC) devices based on WO3 films. The results showed that the ionic conductivity of the electrolytes was not the most important parameter for the colouration performance of these devices. The use of solid electrolytes containing LiClO4 resulted in a higher colouration performance than the corresponding liquid electrolytes, even though the latter exhibited a significantly higher conductivity. The results also showed that the transfer process at the interface between the WO3 layer and the electrolyte played a major role for the colouration process. The presence of Lewis acidic boronate ester groups in the electrolytes significantly improved the performance of the EC devices. The incorporation of boron in the composition of the electrolytes allowed the use of solid electrolytes instead of liquid ones, thus avoiding leakage problems. Furthermore, the highest colouration performance was found in EC devices operating with inexpensive salts. Because of their poor stability, the electrolytes based on LiCl and LiBr were not suitable, while those incorporating LiClO4 salt exhibited excellent overall characteristics.

Publiceringsår

2007

Språk

Engelska

Sidor

330-341

Publikation/Tidskrift/Serie

Solar Energy Materials and Solar Cells

Volym

91

Issue

4

Dokumenttyp

Artikel i tidskrift

Förlag

Elsevier

Ämne

  • Chemical Sciences

Nyckelord

  • salt dissociation
  • interfacial transfer
  • interfacial stabilisation
  • electrochromic devices
  • polymer electrolytes

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 0927-0248