Abstract
Biomass-based nanofibers were prepared by electrospinning a mixture of polyacrylonitrile and acid-treated biomass from industrial hemp straw. The as-prepared biomass-based nanofibers were then carbonized and activated by high-temperature carbonization and KOH to obtain the activated biomass-based carbon nanofibers. The scanning electron microscopy images show that the precursors and carbon nanofibers are composed of fibers 179 nm in diameter, and the nitrogen adsorption/desorption measurements indicate that the carbon nanofibers possess a high-specific surface area of 2348.73 m2·g−1. The carbon nanofibers exhibit excellent electrical performance. The specific capacitance is as high as 244.8 F·g−1 at a current density of 1 A·g−1. The specific capacitance remains at 96% after 3000 cycles of charge and discharge at a current density of 2 A·g−1, showing excellent cycle stability. This work provides new ideas for the future development of supercapacitors electrode materials and enhances the development of biomass energy.
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This work was supported by the National Natural Science Foundation of China (21567015), and the National Key Research and Development Program of China (2016YFC0202900).
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Shi, G., Liu, C., Wang, G. et al. Preparation and electrochemical performance of electrospun biomass-based activated carbon nanofibers. Ionics 25, 1805–1812 (2019). https://doi.org/10.1007/s11581-018-2675-3
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DOI: https://doi.org/10.1007/s11581-018-2675-3