Multiscale Dot-Wire-Sheet Heterostructured Nitrogen-Doped Carbon Dots-Ti3C2Tx/Silk Nanofibers for High-Performance Fiber-Shaped Supercapacitors |
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| Authors: | Zhenjie Zhou Dr Peng Li Dr Zengming Man Dr Xiaolin Zhu Siyuan Ye Prof Wangyang Lu Prof Guan Wu Prof Wenxing Chen |
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| Institution: | 1. National Engineering Lab for Textile Fiber Materials & Processing Technology, Zhejiang Sci-Tech University, Hangzhou, 310018 P. R. China
Zhejiang Provincial Innovation Center of Advanced Textile Technology, Shaoxing, 312000 P. R. China;2. College of Material Science and Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016 P. R. China;3. National Engineering Lab for Textile Fiber Materials & Processing Technology, Zhejiang Sci-Tech University, Hangzhou, 310018 P. R. China |
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| Abstract: | Fiber-shaped supercapacitors (FSCs) have become one of the significantly strategical flexible energy-storage materials towards future wearable textile electronics and metaverse technologies. Here, we develop the high-performance FSCs based on multiscale dot-wire-sheet heterostructure microfiber of nitrogen-doped carbon dots-Ti3C2Tx/silk nanofibers (NCDs-Ti3C2Tx/SNFs) hybrids via microfluidic fabrication. Due to the enlarged interlayer spacing, plentiful porous channels, accelerated H+ ion transport dynamics, large electrical conductivity and excellent mechanical strength/flexibility, the NCDs-Ti3C2Tx/SNFs possesses high volumetric capacitance (2218.7 F cm?3) and reversible charge–discharge stability in 1 M H2SO4 electrolyte. Furthermore, the solid-state FSCs present high energy density (57.9 mWh cm?3), good capacitance (1157 F cm?3), long-life cycles (82.3 % capacitance retention after 40000 cycles), which realize the actual energy-supply applications (powering lamp, watch and toy car). |
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| Keywords: | Actual Applications Dot-Wire-Sheet Heterostructure Fiber-Shaped Supercapacitors High Energy Density Microfluidic Fabrication |
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