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Highly conductive paper for energy-storage devices

机译:用于储能设备的高导电纸

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摘要

Paper, invented more than 2,000 years ago and widely used today in our everyday lives, is explored in this study as a platform for energy-storage devices by integration with 1D nanomaterials. Here, we show that commercially available paper can be made highly conductive with a sheet resistance as low as 1 ohm per square (Ω/sq) by using simple solution processes to achieve con-formal coating of single-walled carbon nanotube (CNT) and silver nanowire films. Compared with plastics, paper substrates can dramatically improve film adhesion, greatly simplify the coating process, and significantly lower the cost. Supercapacitors based on CNT-conductive paper show excellent performance. When only CNT mass is considered, a specific capacitance of 200 F/g, a specific energy of 30-47 Watt-hour/kilogram (Wh/kg), a specific power of 200,000 W/kg, and a stable cycling life over 40,000 cycles are achieved. These values are much better than those of devices on other flat substrates, such as plastics. Even in a case in which the weight of all of the dead components is considered, a specific energy of 7.5 Wh/kg is achieved. In addition, this conductive paper can be used as an excellent lightweight current collector in lithium-ion batteries to replace the existing metallic counterparts. This work suggests that our conductive paper can be a highly scalable and low-cost solution for high-performance energy storage devices.
机译:本文在2000年前发明,如今已广泛应用于我们的日常生活中,本文通过与一维纳米材料集成,将其作为储能设备的平台。在这里,我们表明,通过使用简单的溶液处理方法,可以实现单壁碳纳米管(CNT)的保形涂覆,从而使市售纸具有低至每平方1欧姆(Ω/ sq)的薄层电阻而具有高导电性。银纳米线薄膜。与塑料相比,纸质基材可以显着提高薄膜的附着力,大大简化涂布过程,并显着降低成本。基于CNT导电纸的超级电容器表现出出色的性能。仅考虑CNT质量时,比电容为200 F / g,比能量为30-47瓦时/千克(Wh / kg),比功率为200,000 W / kg,稳定的循环寿命超过40,000周期得以实现。这些值比其他平面基板上的设备(例如塑料)要好得多。即使在考虑所有废料成分的重量的情况下,也可以实现7.5 Wh / kg的比能。此外,该导电纸还可以用作锂离子电池中出色的轻量级集电器,以替代现有的金属制同类产品。这项工作表明,我们的导电纸可以成为高性能储能设备的高度可扩展且低成本的解决方案。

著录项

  • 来源
  • 作者单位

    Departments of Materials Science and Engineering, Stanford University, Stanford, CA 94305;

    Departments of Materials Science and Engineering, Stanford University, Stanford, CA 94305;

    Departments of Materials Science and Engineering, Stanford University, Stanford, CA 94305;

    Departments of Electrical Engineering, Stanford University, Stanford, CA 94305;

    Departments of Materials Science and Engineering, Stanford University, Stanford, CA 94305;

    Departments of Materials Science and Engineering, Stanford University, Stanford, CA 94305;

    Departments of Materials Science and Engineering, Stanford University, Stanford, CA 94305;

  • 收录信息 美国《科学引文索引》(SCI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    conformal coating; carbon nanotubes; nanomaterial; solution process;

    机译:保形涂料碳纳米管;纳米材料解决过程;

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