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Highly Crystalline Graphene Fibers with Superior Strength and Conductivities by Plasticization Spinning

机译：高度结晶的石墨烯纤维，通过塑化纺丝具有优异的强度和导电性

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摘要

Graphene fiber (GF), a macroscopic one-dimensional assembly of individual graphene sheets, promises both extraordinary mechanical performance and superior multifunctionality. However, the properties of graphene fiber are still limited due to the unfavorable crystalline structures, especially induced by wrinkled conformations of graphene. A plasticization spinning strategy is presented to achieve GF with both high mechanical strength and electrical/thermal conductivity. Adjusting the interlayer space from 1.2 to 1.8 nm by intercalating proper plasticizers to adjacent graphene oxide sheets enables graphene oxide fibers to achieve a 580% enhanced deformable plasticity. Such a plasticization spinning flattens random graphene wrinkles, and regulates sheets with high order and stacking density, thereby forming large crystallite domains. The GF exhibits all around record performance including mechanical strength (3.4 GPa), electrical conductivity (1.19 x 10(6)S m(-1)), and thermal conductivity (1480 W m(-1)K(-1)). The optimally crystalline GF with the integration of benchmark overall properties and scalable fabrication is likely to be attractive and competitive in future industrial applications.
机译：石墨烯纤维（GF），单个石墨烯片的宏观一维组装，承诺非凡的机械性能和优异的多功能性。然而，由于不利的结晶结构，石墨烯纤维的性质仍然受到限制，特别是通过石墨烯的皱纹构象诱导。提出了一种塑化纺丝策略以实现高机械强度和电/导热率的GF。通过将适当的增塑剂嵌入到相邻的石墨烯片中，将中间层从1.2到1.8nm调整为1.2至1.8nm使得石墨烯氧化物纤维能够实现580％的可变形可塑性。这种塑化纺纱扁平随机石墨烯皱纹，并用高阶和堆叠密度调节片材，从而形成大的微晶结构域。 GF围绕着记录性能，包括机械强度（3.4GPa），电导率（1.19×10（6）升）和导热率（1480Wm（-1）K（-1））。最佳结晶GF与基准整体性质和可扩展制造的集成，在未来的工业应用中可能具有吸引力和竞争。

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  • 来源
    《Advanced Functional Materials》 |2020年第52期|2006584.1-2006584.8|共8页
  • 作者

    Li Peng; Liu Yingjun; Shi Shaoyi; Xu Zhen; Ma Weigang; Wang Ziqiu; Liu Senping; Gao Chao;

  • 作者单位

    Zhejiang Univ MOE Key Lab Macromol Synth & Functionalizat Dept Polymer Sci & Engn Key Lab Adsorpt & Separat Mat & Technol Zhejiang 38 Zheda Rd Hangzhou 310027 Peoples R China;

    Zhejiang Univ MOE Key Lab Macromol Synth & Functionalizat Dept Polymer Sci & Engn Key Lab Adsorpt & Separat Mat & Technol Zhejiang 38 Zheda Rd Hangzhou 310027 Peoples R China;

    Tsinghua Univ Key Lab Thermal Sci & Power Engn Minist Educ Dept Engn Mech Beijing 100084 Peoples R China;

    Zhejiang Univ MOE Key Lab Macromol Synth & Functionalizat Dept Polymer Sci & Engn Key Lab Adsorpt & Separat Mat & Technol Zhejiang 38 Zheda Rd Hangzhou 310027 Peoples R China;

    Tsinghua Univ Key Lab Thermal Sci & Power Engn Minist Educ Dept Engn Mech Beijing 100084 Peoples R China;

    Zhejiang Univ MOE Key Lab Macromol Synth & Functionalizat Dept Polymer Sci & Engn Key Lab Adsorpt & Separat Mat & Technol Zhejiang 38 Zheda Rd Hangzhou 310027 Peoples R China;

    Zhejiang Univ MOE Key Lab Macromol Synth & Functionalizat Dept Polymer Sci & Engn Key Lab Adsorpt & Separat Mat & Technol Zhejiang 38 Zheda Rd Hangzhou 310027 Peoples R China;

    Zhejiang Univ MOE Key Lab Macromol Synth & Functionalizat Dept Polymer Sci & Engn Key Lab Adsorpt & Separat Mat & Technol Zhejiang 38 Zheda Rd Hangzhou 310027 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    crystalline fibers; graphene fibers; plastic state; plasticization spinning;

    机译：结晶纤维;石墨烯纤维;塑料状态;塑化纺丝;

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