ELECTROCHEMICAL DEGRADATION OF WO3.NH2O THIN-FILMS

被引：54

作者：

JUDEINSTEIN, P ^{[1
]}

MORINEAU, R ^{[1
]}

LIVAGE, J ^{[1
]}

机构：

[1] UNIV PARIS 06,4 PL JUSSIEU,F-75252 PARIS,FRANCE

来源：

SOLID STATE IONICS | 1992年 / 51卷 / 3-4期

关键词：

D O I：

10.1016/0167-2738(92)90206-5

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Amorphous and crystalline WO3.nH2O thin films were synthesized via the so-gel process. Their electrochromic behavior mainly depends on the hydration state of the oxide network. Faster response times and shorter lifetimes are obtained when the water content increases. Chemical and structural modifications are observed during electrochemical coloration-bleaching cycles. They are due to interface reactions between the oxide film and the liquid electrolyte. Spontaneous insertion of solvent molecules and Li+ ions occurs when hydrated films are immersed into LiClO4/propylene carbonate electrolytes. The oxide network is progressively corroded under electrochemical cycling. Such a phenomenon is not observed with less hydrated samples

引用

页码：239 / 247

页数：9

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