[논문]Enhancement of CNT/PET film adhesion by nano-scale modification for flexible all-solid-state supercapacitors

Kang, Yu Jin; Chung, Haegeun; Kim, Min-Seop; Kim, Woong

doi:10.1016/j.apsusc.2015.07.108

[해외논문] Enhancement of CNT/PET film adhesion by nano-scale modification for flexible all-solid-state supercapacitors

Applied surface science, v.355, 2015년, pp.160 - 165

Kang, Yu Jin (Department of Materials Science and Engineering, Korea University, Seoul 136-713, Republic of Korea) , Chung, Haegeun (Department of Environmental Engineering, Konkuk University, Seoul 143-701, Republic of Korea) , Kim, Min-Seop (Department of Materials Science and Engineering, Korea University, Seoul 136-713, Republic of Korea) , Kim, Woong (Department of Materials Science and Engineering, Korea University, Seoul 136-713, Republic of Korea)

Abstract ▼ AI-Helper

Abstract We demonstrate the fabrication of high-integrity flexible supercapacitors using carbon nanotubes (CNTs), polyethylene terephthalate (PET) films, and ion gels. Although both CNTs and PET films are attractive materials for flexible electronics, they have poor adhesion properties. In this work, we significantly improve interfacial adhesion by introducing nanostructures at the interface of the CNT and PET layers. Simple reactive ion etching (RIE) of the PET substrates generates nano-scale roughness on the PET surface. RIE also induces hydrophilicity on the PET surface, which further enhances adhesive strength. The improved adhesion enables high integrity and excellent flexibility of the fabricated supercapacitors, demonstrated over hundreds of bending cycles. Furthermore, the supercapacitors show good cyclability with specific capacitance retention of 87.5% after 10,000 galvanostatic charge–discharge (GCD) cycles. Our demonstration may be important for understanding interfacial adhesion properties in nanoscale and for producing flexible, high-integrity, high-performance energy storage systems. Highlights High integrity supercapacitors are achieved by improving adhesion of CNTs on PET. Nanostructures on PET substrate significantly enhances the adhesion strength. A simple RIE process generates the nanostructures on PET surface. RIE induces hydrophilicity on the PET and further enhances the adhesive strength. The supercapacitors show good cyclability with high specific capacitance retention.

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참고문헌 (26)

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[해외논문] Enhancement of CNT/PET film adhesion by nano-scale modification for flexible all-solid-state supercapacitors

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[해외논문] Enhancement of CNT/PET film adhesion by nano-scale modification for flexible all-solid-state supercapacitors

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