Stacked Bilayer Graphene and Redox-Active Interlayer for Transparent and Flexible High-Performance Supercapacitors
- Authors
- Jo, Kyungmin; Lee, Sangbong; Kim, Sang-Min; In, Jung Bin; Lee, Seung-Mo; Kim, Jae-Hyun; Lee, Hak-Joo; Kim, Kwang-Seop
- Issue Date
- May-2015
- Publisher
- AMER CHEMICAL SOC
- Citation
- CHEMISTRY OF MATERIALS, v.27, no.10, pp 3621 - 3627
- Pages
- 7
- Journal Title
- CHEMISTRY OF MATERIALS
- Volume
- 27
- Number
- 10
- Start Page
- 3621
- End Page
- 3627
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/9553
- DOI
- 10.1021/cm504801r
- ISSN
- 0897-4756
1520-5002
- Abstract
- Fabrication of a transparent and flexible supercapacitor requires electrode materials that are optically transparent and mechanically flexible. Although chemical vapor deposition (CVD)-grown graphene is a promising electrode material, its use in sup ercapacitor applications is greatly limited by the low area-specific capacitance of the fabricated supercapacitor. Here, we demonstrate transparent and flexible high-performance supercapacitor using stacked bilayer graphene and an ultrathin redox-active interlayer. By inserting the redox-active layer between stacked bilayer graphene, we achieved an almost 20-fold enhancement of the area-specific capacitance (from 5.6 mu F/cm(2) to 101 mu F/cm(2)) with a thickness of electrode material for each electrode less than 2 nm. In addition, the fabricated supercapacitor exhibited excellent transparency of 75% (including the substrate's transparency) and flexibility (bending radius down to 5 mm) by virtue of the outstanding transparency and flexibility of the stacked bilayer graphene and redox-active interlayer.
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Collections - College of Engineering > School of Mechanical Engineering > 1. Journal Articles
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