Air-Stable, High-Performance, Flexible Microsupercapacitor with Patterned lonogel Electrolyte
- Authors
- Kim, Daeil; Lee, Geumbee; Kim, Doyeon; Ha, Jeong Sook
- Issue Date
- 4-3월-2015
- Publisher
- AMER CHEMICAL SOC
- Keywords
- flexible microsupercapacitor; ionogel electrolyte; air stable; patterned electrolyte; all-solid-state
- Citation
- ACS APPLIED MATERIALS & INTERFACES, v.7, no.8, pp.4608 - 4615
- Indexed
- SCIE
SCOPUS
- Journal Title
- ACS APPLIED MATERIALS & INTERFACES
- Volume
- 7
- Number
- 8
- Start Page
- 4608
- End Page
- 4615
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/94156
- DOI
- 10.1021/am5077843
- ISSN
- 1944-8244
- Abstract
- We describe the fabrication of air-stable, high-performance, planar microsupercapacitors (MSCs) on a flexible poly(ethylene terephthalate) substrate with patterned ionogel electrolyte, i.e., poly(ethylene glycol) diacrylate/1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide, and electrodes of spray-coated multiwalled carbon nanotubes. The flexible MSC showed good cyclability, retaining similar to 80% of initial capacitance after 30 000 cycles, and good mechanical stability down to a bending diameter of 3 mm under compressive stress; 95% of the initial capacitance was retained after 1000 bending cycles. The MSC had high electrochemical stability with retaining 90% of its initial capacitance for 8 weeks in air. Furthermore, vertical stacking of MSCs with patterned solid film of ionogel electrolyte could increase the areal capacitance dramatically. This flexible MSC has potential applications as an energy-storage device in micro/nanoelectronics, without encapsulation for air stability.
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Collections - College of Engineering > Department of Chemical and Biological Engineering > 1. Journal Articles
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