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Vertical-Aligned and Ordered-Active Architecture of Heterostructured Fibers for High Electrochemical Capacitance

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Abstract

Architecture of fibrous building blocks with ordered structure and high electroactivity that enables quick charge kinetic transport/intercalation is necessary for high-energy-density electrochemical supercapacitors. Herein, we report a heterostructured molybdenum disulfide@vertically aligned graphene fiber (MoS2@VA-GF), wherein well-defined MoS2 nanosheets are decorated on vertical graphene fibers by C–O–Mo covalent bonds. Benefiting from uniform microfluidic self-assembly and confined reactions, it is realized that the unique characteristics of a vertical-aligned skeleton, large faradic activity, in situ interfacial connectivity and high-exposed surface/porosity remarkably create efficiently directional ionic pathways, interfacial electron mobility and pseudocapacitive accessibility for accelerating charge transport and intercalation/de-intercalation. Resultant MoS2@VA-GF exhibits large gravimetric capacitance (564 F g−1) and reversible redox transitions in 1 M H2SO4 electrolyte. Furthermore, the MoS2@VA-GF-based solid-state supercapacitors deliver high energy density (45.57 Wh kg−1), good cycling stability (20,000 cycles) and deformable/temperature-tolerant capability. Beyond that, supercapacitors can realize actual applications of powering multicolored optical fiber lamps, wearable watch, electric fans and sunflower toys.

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The authors declare that the data supporting the findings of this study are available within the paper and its Supplementary Information files. Should any raw data files be needed in another format they are available from the corresponding author upon reasonable request. Source data are provided with this paper.

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Acknowledgements

The authors gratefully acknowledge financial support from the National Natural Science Foundation of China (22278378), Zhejiang Provincial Natural Science Foundation of China (LDQ24E030001), Natural Science Foundation of Jiangsu Province (BK20211592), and Science Foundation of Zhejiang Sci-Tech University (22212011-Y).

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Authors and Affiliations

  1. National Engineering Lab for Textile Fiber Materials and Processing Technology, Zhejiang Sci-Tech University, Hangzhou, 310018, People’s Republic of China

    Xiaolin Zhu, Yang Zhang, Zengming Man, Wangyang Lu & Guan Wu

  2. Zhejiang Provincial Innovation Center of Advanced Textile Technology, Shaoxing, 312000, People’s Republic of China

    Xiaolin Zhu, Yang Zhang, Zengming Man, Wangyang Lu & Guan Wu

  3. State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing, 210009, People’s Republic of China

    Hui Qiu & Ningzhong Bao

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  1. Xiaolin Zhu
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Zhu, X., Qiu, H., Zhang, Y. et al. Vertical-Aligned and Ordered-Active Architecture of Heterostructured Fibers for High Electrochemical Capacitance. Adv. Fiber Mater. 6, 312–328 (2024). https://doi.org/10.1007/s42765-023-00349-6

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