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首页> 外文期刊>Advanced Functional Materials >'Brick-and-Mortar' Self-Assembly Approach to Graphitic Mesoporous Carbon Nanocomposites
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'Brick-and-Mortar' Self-Assembly Approach to Graphitic Mesoporous Carbon Nanocomposites

机译：石墨中孔碳纳米复合材料的“砖和砂浆”自组装方法。

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摘要

Mesoporous carbon materials do not have sufficient ordering at the atomic scale to exhibit good electronic conductivity. To date, mesoporous carbons having uniform mesopores and high surface areas have been prepared from partially-graphitizable precursors in the presence of templates. High temperature thermal treatments above 2000 ℃, which are usually required to increase conductivity, result in a partial or total collapse of the mesoporous structures and reduced surface areas induced by growth of graphitic domains, limiting their applications in electric double layer capacitors and lithium-ion batteries. In this work, we successfully implemented a "brick-and-mortar" approach to obtain ordered graphitic mesoporous carbon nanocomposites with tunable mesopore sizes below 850 ℃ without using graphitization catalysts or high temperature thermal treatments. Phenolic resin-based mesoporous carbons act as mortar to highly conductive carbon blacks and carbon onions (bricks). The capacitance and resistivity of final materials can be tailored by changing the mortar to brick ratios.
机译：中孔碳材料在原子尺度上没有足够的有序性以表现出良好的电子导电性。迄今为止，已经在模板存在下由部分可石墨化的前体制备了具有均一的中孔和高表面积的中孔碳。通常需要在2000℃以上的高温热处理以提高导电性，导致介孔结构部分或全部塌陷，并由于石墨畴的生长而导致表面积减小，从而限制了它们在双电层电容器和锂离子中的应用电池。在这项工作中，我们成功地实现了“砖混”方法，而无需使用石墨化催化剂或高温热处理，即可获得具有可调中孔尺寸的低于850℃的有序石墨中孔碳纳米复合材料。酚醛树脂基中孔碳充当高导电性炭黑和碳洋葱（砖）的砂浆。最终材料的电容和电阻率可以通过改变砂浆与砖的比例来调整。

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  • 来源
    《Advanced Functional Materials》 |2011年第12期|p.2208-2215|共8页
  • 作者

    Pasquale F. Fuhio; Richard T. Mayes; Xiqing Wang; Shannon M. Mahurin; John C. Bauer; Volker Presser; John McDonough; Yury Gogotsi; Sheng Dai;

  • 作者单位

    Chemical Sciences Division Oak Ridge National Laboratory Oak Ridge, Tennessee 37831, USA;

    Chemical Sciences Division Oak Ridge National Laboratory Oak Ridge, Tennessee 37831, USA;

    Chemical Sciences Division Oak Ridge National Laboratory Oak Ridge, Tennessee 37831, USA;

    Chemical Sciences Division Oak Ridge National Laboratory Oak Ridge, Tennessee 37831, USA;

    Chemical Sciences Division Oak Ridge National Laboratory Oak Ridge, Tennessee 37831, USA;

    Department of Materials Science and Engineering A.j. Drexel Nanotechnology Institute Drexel University Philadelphia, Pennsylvania 19104, USA;

    Department of Materials Science and Engineering A.j. Drexel Nanotechnology Institute Drexel University Philadelphia, Pennsylvania 19104, USA;

    Department of Materials Science and Engineering A.j. Drexel Nanotechnology Institute Drexel University Philadelphia, Pennsylvania 19104, USA;

    Chemical Sciences Division Oak Ridge National Laboratory Oak Ridge, Tennessee 37831, USA,Department of Chemistry University of Tennessee Knoxville, TN 37996, USA;

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