Multiscale Dot‐Wire‐Sheet Heterostructured Nitrogen‐Doped Carbon Dots‐Ti3C2Tx/Silk Nanofibers for High‐Performance Fiber‐Shaped Supercapacitors

Author:

Zhou Zhenjie12,Li Peng3,Man Zengming12,Zhu Xiaolin12,Ye Siyuan12,Lu Wangyang12,Wu Guan12ORCID,Chen Wenxing12

Affiliation:

1. National Engineering Lab for Textile Fiber Materials & Processing Technology Zhejiang Sci-Tech University Hangzhou 310018 P. R. China

2. Zhejiang Provincial Innovation Center of Advanced Textile Technology Shaoxing 312000 P. R. China

3. College of Material Science and Engineering Nanjing University of Aeronautics and Astronautics Nanjing 210016 P. R. China

Abstract

AbstractFiber‐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).

Funder

National Natural Science Foundation of China

Natural Science Foundation of Jiangsu Province

Publisher

Wiley

Subject

General Chemistry,Catalysis

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