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- 저자 : Çakmakçı Nilüfer (검색결과 2 건)
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Çakmakçı Nilüfer,Shin Myunggyu,Jung Huiyeon,Lee Jeongyun,Jeong Youngjin 한국탄소학회 2023 Carbon Letters Vol.33 No.4
Nowadays, variable materials have been investigated to find alternative lightweight conductors instead of copper because copper has a relatively high density. Carbon nanotube (CNT) is one of the most suitable materials as an alternative conductor to Cu, thanks to its high conductivity. In addition, CNT has many other great properties, such as low density, high strength, and high ampacity. However, individual CNT loses some of its performance after the assembly process. Therefore, CNT materials have been electroplated with copper to achieve lighter conductors. In this study, CNT buckypaper (CNTBP) is fabricated using a multi-walled carbon nanotube and copper electroplated using optimizing electrolyte with the help of additive chemicals such as accelerator and suppressor. Furthermore, the effect of hydrochloric acid in the electrolyte on the electroplating of CNTBP is observed. The results show that HCl in electrolyte enhances the effectiveness of additive chemicals and provide a well-plated CNTBP@Cu composite. The composite in this study is expected to be used in various areas.
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김혜주,송현준,Nilüfer Çakmakçı,강희수,박종현,신명규,정영진 한국섬유공학회 2021 Fibers and polymers Vol.22 No.10
As the demand for wearable devices increases, compatible energy storage systems have been explored. Energysystems integrated into wearable devices require mechanical robustness and stable electrochemical performance undermechanical deformations such as bending and folding. Herein, the flexible supercapacitor is fabricated with surface modifiedcarbon nanotube (CNT) film and a cross-linked acrylamide@N',N'-methylenebisacrylamide (AAM@MBA) hydrogel tomount on wearable devices. CNT film is a promising candidate for the electrode of flexible supercapacitors owing to its highelectrical conductivity, surface area, flexibility, and excellent mechanical properties. The high ionic conductivity, goodviscoelasticity, and shock absorption of hydrogel polymers make them suitable electrolyte materials for flexiblesupercapacitors. The heat treatment under air atmosphere is conducted on CNT film to enhance the interfacial adhesion withhydrogel electrolyte. The flexible supercapacitor delivers 8.15 F g-1 of specific capacitance and shows 93 % of goodcapacitance retention up to 400 cycles. Furthermore, it works normally when bending stress is applied. The flexiblesupercapacitor in this study is expected to be used in wearable devices, thanks to its good performance and high flexibility.
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