High-performance graphene-based carbon fibres prepared at room temperature via domain folding.

IF 38.5 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Nature Materials Pub Date : 2025-10-20 DOI:10.1038/s41563-025-02384-7

Peng Li,Ziqiu Wang,Gangfeng Cai,Yingjie Zhao,Zihao Deng,Bo Wang,Zheng Li,Xin Ming,Weiwei Gao,Zhen Xu,Zhiping Xu,Yingjun Liu,Chao Gao

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引用次数: 0

Abstract

The assembly of strong graphene into high-performance macroscopic materials has attracted great interest and sustained attention. Thermal treatment has proven effective in improving the performance by restoring pristine graphene lattice from defective graphene oxide. However, the mechanical performance of graphene fibres remains inferior to that of single-layer pristine graphene, primarily due to assembly-induced defects such as microvoids that form during the folding process of two-dimensional sheets to fibre structures. Here we report the room-temperature fabrication of ultrastrong and stiff graphene fibres, which exhibit an average tensile strength of 5.19 GPa and Young's modulus of 529 GPa. We propose a domain-folding strategy to construct highly folded yet densely packed nanotexture, resulting in a tenfold reduction in microvoid volume. The stress distribution within the fibres is homogenized, leading to enhanced mechanical properties. These findings advance the fabrication of carbon fibres and other macroscopic materials assembled from two-dimensional nanosheets, enabling high material quality with reduced energy consumption.

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通过畴折叠在室温下制备高性能石墨烯基碳纤维。

将强石墨烯组装成高性能宏观材料引起了人们的极大兴趣和持续关注。热处理已被证明可以有效地从有缺陷的氧化石墨烯中恢复原始的石墨烯晶格，从而提高性能。然而，石墨烯纤维的机械性能仍然不如单层原始石墨烯，主要是由于组装引起的缺陷，例如在二维薄片与纤维结构折叠过程中形成的微孔。在这里，我们报告了室温下制备的超强和刚性石墨烯纤维，其平均抗拉强度为5.19 GPa，杨氏模量为529 GPa。我们提出了一种区域折叠策略来构建高度折叠但致密堆积的纳米结构，从而使微孔体积减少10倍。应力分布在纤维是均匀的，导致增强的机械性能。这些发现推动了碳纤维和其他由二维纳米片组装的宏观材料的制造，在降低能耗的同时实现了高质量的材料。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nature Materials 工程技术-材料科学：综合

CiteScore

62.20

自引率

0.70%

发文量

221

审稿时长

3.2 months

期刊介绍： Nature Materials is a monthly multi-disciplinary journal aimed at bringing together cutting-edge research across the entire spectrum of materials science and engineering. It covers all applied and fundamental aspects of the synthesis/processing, structure/composition, properties, and performance of materials. The journal recognizes that materials research has an increasing impact on classical disciplines such as physics, chemistry, and biology. Additionally, Nature Materials provides a forum for the development of a common identity among materials scientists and encourages interdisciplinary collaboration. It takes an integrated and balanced approach to all areas of materials research, fostering the exchange of ideas between scientists involved in different disciplines. Nature Materials is an invaluable resource for scientists in academia and industry who are active in discovering and developing materials and materials-related concepts. It offers engaging and informative papers of exceptional significance and quality, with the aim of influencing the development of society in the future.