Journal
CHEMISTRY OF MATERIALS
Volume 27, Issue 10, Pages 3621-3627Publisher
AMER CHEMICAL SOC
DOI: 10.1021/cm504801r
Keywords
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Funding
- R&D Convergence Program of MSIP (Ministry of Science, ICT, and Future Planning)
- NST (National Research Council of Science & Technology) of Republic Korea [CAP-13-2-ETRI]
- Center for Advanced Meta-Materials (CAMM) of MSIP as a Global Frontier Project (CAMM) [2014063701, 2014063700]
- Korea Institute of Machinery and Materials [SC1090, NK192C]
- National Research Council of Science & Technology (NST), Republic of Korea [SC1090, NK192C] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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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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