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首页> 外文期刊>Advanced energy materials >Disordered, Large Interlayer Spacing, and Oxygen-Rich Carbon Nanosheets for Potassium Ion Hybrid Capacitor
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Disordered, Large Interlayer Spacing, and Oxygen-Rich Carbon Nanosheets for Potassium Ion Hybrid Capacitor

机译：钾离子混合电容器的无序，大的层间间距和富氧的碳纳米片。

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摘要

Potassium ion storage technology as a promising substitute for the well-developed lithium ion storage technology is still at the infancy stage of development, and exploring suitable electrode materials is critical for its practical application. Here, the great feasibility of disordered, large interlayer spacing, and oxygen-rich carbon nanosheets (CNSs) prepared by chemical vapor deposition for potassium ion storage applications is demonstrated. As an anode material, the CNSs exhibit outstanding rate capability as well as excellent cyclic stability. Taking advantage of this, a potassium ion hybrid capacitor (PIHC) is constructed by employing such CNSs as the battery-type anode and activated carbon as the capacitor-type cathode. The resulting device displays a high energy density of 149 Wh kg(-1), an ultrahigh power output of 21 kW kg(-1), as well as a long cycling life (80% capacity retention after 5000 cycles), which are all close to the state-of-the-art values for PIHCs. This work promotes the development of high-performance anode material for potassium ion storage devices, and the designed PIHC pushes the energy density and power density to a higher level.
机译：作为发展良好的锂离子存储技术的有希望的替代品，钾离子存储技术仍处于起步阶段，探索合适的电极材料对其实际应用至关重要。在此，证明了通过化学气相沉积制备的无序，较大的中间层间距和富氧的碳纳米片（CNS）在钾离子存储应用中的巨大可行性。作为负极材料，CNS具有出色的速率性能以及出色的循环稳定性。利用这种优势，通过将此类CNS用作电池型阳极，并使用活性炭作为电容器型阴极来构造钾离子混合电容器（PIHC）。最终的设备显示出149 Wh kg（-1）的高能量密度，21 kW kg（-1）的超高功率输出，以及长的循环寿命（5000次循环后保持80％的容量），所有这些接近PIHC的最新水平。这项工作促进了用于钾离子存储设备的高性能阳极材料的开发，而设计的PIHC将能量密度和功率密度推向了更高的水平。

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  • 来源
    《Advanced energy materials》 |2019年第19期|1803894.1-1803894.9|共9页
  • 作者

    Chen Jiangtao; Yang Bingjun; Hou Hongjun; Li Hongxia; Liu Li; Zhang Li; Yan Xingbin;

  • 作者单位

    Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lab Clean Energy Chem & Mat, Lanzhou 730000, Gansu, Peoples R China;

    Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lab Clean Energy Chem & Mat, Lanzhou 730000, Gansu, Peoples R China|Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China;

    Do Fluoride Chem Co Ltd, Jiaoke Rd, Jiaozuo 454006, Henan, Peoples R China;

    Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lab Clean Energy Chem & Mat, Lanzhou 730000, Gansu, Peoples R China|Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China;

    Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lab Clean Energy Chem & Mat, Lanzhou 730000, Gansu, Peoples R China;

    Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lab Clean Energy Chem & Mat, Lanzhou 730000, Gansu, Peoples R China;

    Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lab Clean Energy Chem & Mat, Lanzhou 730000, Gansu, Peoples R China|Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China|Gansu Acad Sci, Inst Nanomat Applicat Technol, Lanzhou 730000, Gansu, Peoples R China|Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China;

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  • 正文语种 eng
  • 中图分类
  • 关键词

    anodes; carbon nanosheets; potassium ion batteries; potassium ion hybrid capacitors; rate capability;

    机译：阳极;碳纳米片;钾离子电池;钾离子混合电容器;速率能力;

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