Inkjet-printed metal oxide nanoparticles on elastomer for strain-adaptive transmissive electrochromic energy storage systems

Title
Inkjet-printed metal oxide nanoparticles on elastomer for strain-adaptive transmissive electrochromic energy storage systems
Authors
박상백Guofa CaiXing ChengAlice Lee-Sie EhPooi See Lee
Issue Date
2018-09
Publisher
Science and technology of advanced materials
Citation
VOL 19, NO 1-770
Abstract
The emergence of soft energy devices provides new possibilities for various applications, it also creates significant challenges in the selection of structural design and material compatibility. Herein, we demonstrate a stretchable transmissive electrochromic energy storage device by inkjet-printing single layer of WO3 nanoparticles on an elastomeric transparent conductor. Such hybrid electrode is highly conductive and deformable, making it an excellent candidate for the application: large optical modulation of 40%, fast switching speed (<4.5 s), high coloration efficiency (75.5 cm(2) C-1), good stability and high specific capacity (32.3 mAh g(-1) and 44.8 mAh cm(-3)). The device consists of WO3-based hybrid electrode and polyaniline/carbon nanotubes composite electrode. It maintains excellent electrochromic and energy storage performance even when stretched up to 50%, and achieves a maximum areal energy density of 0.61 mu Wh cm(-2) and power density of 0.83 mW cm(-2), which is one of the highest values in stretchable transparent energy storage devices. A device featuring stretchable transparent nanowires based electrode is illustrated as an energy indicator in which the stored energy can be monitored via reversible color variation. This high performance and multifunctional electrochromic energy storage device is a promising candidate for deformable and wearable electronics.
URI
http://pubs.kist.re.kr/handle/201004/71254
ISSN
1468-6996
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KIST Publication > Article
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