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Transparent and Multi-Foldable Nanocellulose Paper Microsupercapacitors

Author(s)
Kim, Sang-WooLee, Kwon-HyungLee, Yong-HyeokYoue, Won-JaeGwon, Jae-GyoungLee, Sang-Young
Issued Date
2022-12
DOI
10.1002/advs.202203720
URI
https://scholarworks.unist.ac.kr/handle/201301/60697
Citation
ADVANCED SCIENCE, v.9, no.34, pp.2203720
Abstract
Despite the ever-increasing demand for transparent power sources in wireless optoelectronics, most of them have still relied on synthetic chemicals, thus limiting their versatile applications. Here, a class of transparent nanocellulose paper microsupercapacitors (TNP-MSCs) as a beyond-synthetic-material strategy is demonstrated. Onto semi-interpenetrating polymer network-structured, thiol-modified transparent nanocellulose paper, a thin layer of silver nanowire and a conducting polymer (chosen as a pseudocapacitive electrode material) are consecutively introduced through microscale-patterned masks (which are fabricated by electrohydrodynamic jet printing) to produce a transparent conductive electrode (TNP-TCE) with planar interdigitated structure. This TNP-TCE, in combination with solid-state gel electrolytes, enables on-demand (in-series/in-parallel) cell configurations in a single body of TNP-MSC. Driven by this structural uniqueness and scalable microfabrication, the TNP-MSC exhibits improvements in optical transparency (T = 85%), areal capacitance (0.24 mF cm(-2)), controllable voltage (7.2 V per cell), and mechanical flexibility (origami airplane), which exceed those of previously reported transparent MSCs based on synthetic chemicals.
Publisher
WILEY
ISSN
2198-3844
Keyword (Author)
biopolymerfoldable electronicsnanocellulosesupercapacitorstransparent power source
Keyword
CELLULOSESUPERCAPACITORSELECTRODERESISTANCEHYDROGELFILMS

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