Improved Durability of WO3 Nanocomposite Films Using Atomic Layer and Vapor Deposited Coatings

被引：18

作者：

Li, Chi-Ping ^{[1
,2
]}

Tenent, Robert C. ^{[2
]}

Dillon, Anne C. ^{[2
]}

Morrish, Rachel M. ^{[1
]}

Wolden, Colin A. ^{[1
]}

机构：

[1] Colorado Sch Mines, Mat Sci Program, Golden, CO 80401 USA

[2] Natl Renewable Energy Lab, Golden, CO 80401 USA

来源：

ECS ELECTROCHEMISTRY LETTERS | 2012年 / 1卷 / 05期

基金：

美国国家科学基金会;

关键词：

TUNGSTEN-OXIDE NANOPARTICLES; THIN-FILMS; SPRAY-PYROLYSIS; GROWTH; REDUCTION; XPS;

D O I：

10.1149/2.002206eel

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The durability of mesoporous films comprised of tungsten oxide nanoparticles was studied by monitoring their electrochromic performance during extended cycling in lithium perchlorate solution. Standard films rapidly lost charge capacity as nanoparticles detached from the film and were lost to solution. This issue was mitigated through the use of protection layers including evaporated LiAlF4 and alumina applied by atomic layer deposition (ALD). Three ALD cycles offered superior protection to 100 nm of LiAlF4, enabling >2500 cycles with no appreciable change in electrochromic performance. Moreover, the addition of these protection layers did not degrade the switching time as evidenced by their transient response to potential step changes. (C) 2012 The Electrochemical Society. All rights reserved.

引用

页码：H24 / H27

页数：4

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