双向促进组装顺序的超和高度导热的石墨烯纤维
Peng Li1, Ziqiu Wang1, Yuxiang Qi1
1MOE Key Laboratory of Macromolecular Synthesis and Functionalization, International Research Center for X Polymers, Department of Polymer Science and Engineering, Zhejiang University, 38 Zheda Road, Hangzhou, 310027, P. R. China.
Nature communications
|January 9, 2024
概括
研究人员开发了一种新方法来制造高性能石墨烯纤维. 该技术通过控制2D石墨烯氧化物板的组装来提高机械和热性能.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
- 聚合物科学 聚合物科学
背景情况:
- 像石墨烯一样,来自二维纳米板的宏观纤维是新兴材料.
- 目前这些纤维的制备方法是从1D聚合物中改造出来的,从而产生低于最佳的微观结构和性能.
研究的目的:
- 引入一种新的概念,以双向促进固体纤维中的2D纳米片的组装顺序.
- 为了在石墨烯纤维中实现协同改进的机械和热性能.
主要方法:
- 使用多个切割流场来控制石墨烯氧化物板的排列.
- 实现横截面的同心排列和沿纤维的轴线对齐.
主要成果:
- 证明了增强的板状顺序和密集的晶体石墨结构.
- 生产的石墨烯纤维具有901 GPa的超高模量.
- 实现了1660 W m-1 K-1.1 的导热率.
结论:
- 双向组装概念显著提高了石墨烯纤维的机械和热性能.
- 这种方法为将二维纳米板组装成先进材料提供了一个新的范式.
- 这些发现对二维材料的科学理解和技术应用都有影响.
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