[3PS-134]
Advanced Coaxial Fiber Shaped Supercapacitors Tailored for Wearable Electronics
발표자DANYA SRINIVASAN (JEONBUK NATIONAL UNIVERSITY)
연구책임자강재욱 (전북대학교)
Abstract
Smart wearable need thin, flexible energy storage devices. Here, we fabricated coaxial fiber supercapacitors (FSCs) of various lengths, using horizontal meniscus coating (HMC) on nylon fibers. This method gives uniform coating of silver nanowires as the current collector and a composite of MXene+PEDOT:PSS as the active electrode. To prevent degradation of the Ag NWs during electrochemical processes, a protective intermediate layer of polyethylenimine ethoxylated (PEIE) was incorporated. Combines the electrochemical stability of MXene & the high capacitance and mechanical flexibility of PEDOT:PSS, the FSCs exhibits high areal capacitances of 620mF/cm² & 430mF/cm² for 1cm & 5cm long Ag NWs/PEIE/MP devices, at a current density of 28 µA/cm². Reflects a ~40% enhancement over Ag NWs/MP FSCs without the PEIE layer. Additionally, 5 cm FSCs maintained 92% of capacitance after 10,000 GCD cycles, confirms their potential for integration into wearable electronics