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Exceptional electrical and thermal transport properties in tunable all-graphene papers

机译：可调谐全石墨烯纸中的特殊电气和热传输性能

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摘要

Lightweight thermally conductive materials of various electrical features, ranging from insulators such as boron nitride composites to highly conductive graphene-based materials, are increasingly attractive in substituting traditional metal materials for many practical applications. Herein we take a new insight into the electrical and thermal transport properties of the flexible all-graphene papers, where electrically and thermally insulating graphene oxide nanosheets (GO) serve as unique interfaces in the graphene papers stacked by electrically and thermally conductive graphene nanosheets (GN). Anisotropic all-graphene papers with decoupling of thermal and electrical transport properties have been achieved based on controlling the electron and phonon transport paths at the GN-GO interfaces. The fundamental mechanism of the exclusive electrical and thermal transport behaviors in the all-graphene papers has been discussed, indicating more advantageous features in manipulating the transport properties in comparison with other conventional graphene/polymer composites. The implication of the tunable thermal conductivity in the entire semi-conductive range suggests a conceptually novel stage toward fabricating advanced graphene materials of various electrical features for wide thermal management.
机译：各种电特征的轻质导电材料，从诸如氮化硼复合材料等绝缘体到高导电的石墨烯基材料的各种电气特征，在替代传统的金属材料中越来越有吸引力，用于许多实际应用。在此我们对柔性全石墨烯纸的电气和热传输性能进行了新的洞察，其中电和热绝缘的石墨烯氧化物纳米片（GO）用作通过电和导热石墨烯纳米液堆叠的石墨烯纸中的独特界面（GN ）。基于控制GN-GO-GO-GO-GO接口的电子和声子传输路径，已经实现了具有去耦的各向异性全图形纸。已经讨论了所有石墨烯纸中的专用电气和热传输行为的基本机制，表明与其他常规石墨烯/聚合物复合材料相比操纵运输性质的更有利的特征。整个半导体系列中可调谐导热率的含义表明了朝宽热管理制造各种电气特征的先进石墨烯材料的概念性新颖的阶段。

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  • 来源
    《RSC Advances》 |2015年第92期|共9页
  • 作者

    Liu Lin; Bian Xing-Ming; Tang Jin; Xu Hong; Hou Zhi-Ling; Song Wei-Li;

  • 作者单位

    North China Elect Power Univ State Key Lab Alternate Elect Power Syst Renewabl Beijing 102206 Peoples R China;

    North China Elect Power Univ State Key Lab Alternate Elect Power Syst Renewabl Beijing 102206 Peoples R China;

    North China Elect Power Univ State Key Lab Alternate Elect Power Syst Renewabl Beijing 102206 Peoples R China;

    North China Elect Power Univ State Key Lab Alternate Elect Power Syst Renewabl Beijing 102206 Peoples R China;

    Beijing Univ Chem Technol Sch Sci Beijing 100029 Peoples R China;

    Univ Sci &

    Technol Beijing Inst Adv Mat &

    Technol Beijing 100083 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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