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The preparation of liquefied bio-stalk carbon nanofibers and their application in supercapacitors

机译：制备液化生物茎碳纳米纤维及其在超级电容器中的应用

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摘要

Carbon nanofibers (CNFs) have been widely used in electrochemical energy storage devices because of their excellent conductivity, extremely large surface area and structural stability. Herein, we obtained a viscous, liquefied bio-stalk carbon via the simple chemical treatment of biomass, and mixed it with polyacrylonitrile to prepare a spinning solution. Subsequent electrospinning and high temperature activation resulted in the successful preparation of liquefied lignin-based activated carbon nanofibers. The as-prepared liquefied bio-stalk carbon nanofibers exhibited an outstanding electrochemical performance (specific capacitance of 273 F g(-1) at 0.5 A g(-1) current density), and a capacitance retention of 210 F g(-1) even under a large current density of 10 A g(-1). Besides its high specific capacitance and outstanding rate capability, the symmetrical supercapacitor cell based on the liquefied carbon-based nanofiber electrodes also exhibited an excellent cycling performance with 92.76% capacitance retention after 5000 charge-discharge cycles. This study provides a new strategy for the future development of supercapacitor electrode materials and enhances the development of biomass energy.
机译：由于其优异的导电性，极大的表面积和结构稳定性，碳纳米纤维（CNFS）已广泛用于电化学能量存储装置中。在此，我们通过生物质的简单化学处理得到粘性的液化生物茎碳，并将其与聚丙烯腈混合以制备纺丝溶液。随后的静电纺丝和高温活化导致液化木质素基活性炭纳米纤维的成功制备。制备的液化生物茎碳纳米纤维呈现出优异的电化学性能（在0.5A的电流密度为0.5A的电流密度（-1）的特定电容（-1），电容保持为210 f g（-1）即使在10 A G（-1）的大电流密度下。除了其高特定电容和出色的速率能力之外，基于液化碳基纳米纤维电极的对称超胶质电池还表现出优异的循环性能，在5000次充电 - 放电循环后的电容保留92.76％。本研究为未来发展超级电容器电极材料的发展提供了一种新的策略，增强了生物质能量的发展。

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  • 来源
    《RSC Advances》 |2019年第40期|共10页
  • 作者

    Jiang Xia; Liu Chao; Shi Gaofeng; Wang Guoying; Wang Zhao; Jia Shiming; Dong Yucan; Mishra Puranjan; Tian Haoqi; Liu Yanrong;

  • 作者单位

    Lanzhou Univ Technol Sch Petrochem Engn Lanzhou Gansu Peoples R China;

    Lanzhou Univ Technol Sch Petrochem Engn Lanzhou Gansu Peoples R China;

    Lanzhou Univ Technol Sch Petrochem Engn Lanzhou Gansu Peoples R China;

    Lanzhou Univ Technol Sch Petrochem Engn Lanzhou Gansu Peoples R China;

    Lanzhou Univ Technol Sch Petrochem Engn Lanzhou Gansu Peoples R China;

    Lanzhou Univ Technol Sch Petrochem Engn Lanzhou Gansu Peoples R China;

    Lanzhou Univ Technol Sch Petrochem Engn Lanzhou Gansu Peoples R China;

    Univ Malaysia Pahang Fac Engn Technol Lebuhraya Tun Razak Kuantan 26300 Pahang Malaysia;

    Lanzhou Univ Technol Sch Petrochem Engn Lanzhou Gansu Peoples R China;

    Lanzhou Univ Technol Sch Petrochem Engn Lanzhou Gansu Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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