Preparation of a Star Network PEG-based Gel Polymer Electrolyte and Its Application to Electrochromic Devices

Autor:	Shu-Peng Zhang, Xiang-Kai Fu, Yong-Feng Gong, Qinglong Jiang
Rok vydání:	2007
Předmět:	chemistry.chemical_classification General Chemistry Polymer Electrolyte Electrochromic devices Pentaerythritol Lithium perchlorate Thermogravimetry chemistry.chemical_compound chemistry Chemical engineering Polymer chemistry Ionic conductivity Thermal stability
Zdroj:	Chinese Journal of Chemistry. 25:1743-1747
ISSN:	1614-7065 1001-604X
DOI:	10.1002/cjoc.200790322
Popis:	A star network polymer with a pentaerythritol core linking four PEG-block polymeric arms was synthesized, and its corresponding gel polymer electrolyte based on lithium perchlorate and plasticizers EC/PC with the character being colorless and highly transparent has been also prepared. The polymer host was characterized and confirmed to be of a star network and an amorphous structure by FTIR, 1H NMR and XRD studies. The polymer host hold good mechanical properties for pentaerythritol cross-linking. Maximum ionic conductivity of the prepared polymer electrolyte has reached 8.83×10−4 S·cm−1 at room temperature. Thermogravimetry (TG) of the polymer electrolyte showed that the thermal stability was up to at least 150 °C. The gel polymer electrolyte was further evaluated in electrochromic devices fabricated by transparent PET-ITO and electrochromically active viologen derivative films, and its excellent performance promised the usage of the gel polymer electrolyte as ionic conductor material in electrochromic devices.
Databáze:	OpenAIRE
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