Microfluidic‐Spinning‐Directed Conductive Fibers toward Flexible Micro‐Supercapacitors |
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Authors: | Yu‐Long Tong Bin Xu Xia‐Fang Du Heng‐Yang Cheng Cai‐Feng Wang Guan Wu Su Chen |
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Affiliation: | 1. State Key Laboratory of Materials‐Oriented Chemical Engineering and College of Chemical Engineering, Jiangsu Key Laboratory of Fine Chemicals and Functional Polymer Materials, Nanjing Tech University, Nanjing, P. R. China;2. Nanjing Institute of Environmental Sciences, Ministry of Environmental Protection of the People's Republic of China, Nanjing, China |
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Abstract: | The large‐scale fabrication of the flexible fiber‐shaped micro‐supercapacitors has received major attention from both industrial and academic researchers. Herein, conductive and robust polyaniline‐wrapped multiwall carbon tubes reduced graphene oxide/thermoplastic polyurethane (PANI/MCNTs‐rGO/TPU) composite fibers are successfully fabricated on a large scale via the combination of facile microfluidic‐spinning process and in situ polymerization of aniline. Initially, MCNTs‐rGO/TPU fibers are formed in a T‐shape microfluidic chip, relying on the fast material diffusion and exchange in the microfluidic channel. Then, PANI/MCNTs‐rGO/TPU hybrid fibers are synthesized through an in situ chemical oxidative polymerization of aniline. With the assistance of polyaniline, these PANI/MCNTs‐rGO/TPU hybrid fibers exhibit enhanced electrochemical properties in comparison with pure MCNTs‐rGO/TPU fibers, especially in high specific capacitance, which is dramatically increased from 42.1 to 155.5 mF cm?2. Moreover, the PANI/MCNTs‐rGO/TPU hybrid fibers can endure various blending stresses, contributing to its outperforming flexibility and weavability. The best of the excellent electrochemical and mechanical properties of these conductive fibers is made to construct the flexible supercapacitors and various complicated functional fabrics. |
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Keywords: | carbon nanotubes in situ polymerization microfluidic‐spinning supercapacitors |
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