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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：用于钾离子混合电容器的混乱，大型层间间距和富氧碳纳米片

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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：钾离子储能技术作为开发良好的锂离子储存技术的有前途的替代品仍处于开发的初期阶段，并且探索合适的电极材料对于其实际应用至关重要。这里，证明了通过化学气相沉积用于钾离子储存应用的无序，大的层间间距和富氧碳纳米片（CNSS）的巨大可行性。作为阳极材料，CNSS表现出出色的速率能力以及优异的循环稳定性。利用此，通过使用这种CNS作为电池型阳极和作为电容器型阴极的活性炭来构造钾离子混合电容器（PIHC）。得到的装置显示器高能量密度为149WH kg（-1），超高功率输出为21 kg kg（-1），以及长的循环寿命（5000次循环后的80％容量保留），这是全部的接近PIHC的最先进的价值观。这项工作促进了高性能阳极材料的钾离子存储装置的开发，并且设计的PIHC将能量密度和功率密度推动到更高水平。

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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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  • 原文格式 PDF
  • 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;碳纳米液;钾离子电池;钾离子混合电容器;速率能力;

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