石墨烯
材料科学
复合材料
热导率
制作
各向异性
气凝胶
电阻率和电导率
碳纤维
复合数
纳米技术
医学
替代医学
物理
工程类
病理
量子力学
电气工程
作者
Ying Wu,Chao An,Yaru Guo,Yangyang Zong,Naisheng Jiang,Qingbin Zheng,Zhong‐Zhen Yu
标识
DOI:10.1007/s40820-024-01357-w
摘要
Abstract Stemming from the unique in-plane honeycomb lattice structure and the sp 2 hybridized carbon atoms bonded by exceptionally strong carbon–carbon bonds, graphene exhibits remarkable anisotropic electrical, mechanical, and thermal properties. To maximize the utilization of graphene's in-plane properties, pre-constructed and aligned structures, such as oriented aerogels, films, and fibers, have been designed. The unique combination of aligned structure, high surface area, excellent electrical conductivity, mechanical stability, thermal conductivity, and porous nature of highly aligned graphene aerogels allows for tailored and enhanced performance in specific directions, enabling advancements in diverse fields. This review provides a comprehensive overview of recent advances in highly aligned graphene aerogels and their composites. It highlights the fabrication methods of aligned graphene aerogels and the optimization of alignment which can be estimated both qualitatively and quantitatively. The oriented scaffolds endow graphene aerogels and their composites with anisotropic properties, showing enhanced electrical, mechanical, and thermal properties along the alignment at the sacrifice of the perpendicular direction. This review showcases remarkable properties and applications of aligned graphene aerogels and their composites, such as their suitability for electronics, environmental applications, thermal management, and energy storage. Challenges and potential opportunities are proposed to offer new insights into prospects of this material.
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