Various three-dimensional (3D) structures are rationally assembled from two-dimensional (2D) nanosheets of graphene and boron nitride (BN) for thermal energy regulating applications. The nanocomposites containing these 3D architectures offer thermal conductivities spanning a few orders of magnitude from ultralow values for super thermal insulation to high values for fast heat dissipation. In this review, we summarize the approaches developed to achieve two extremes of thermal conductivity in 3D graphene and BN assemblies by engineering their structures at different length scales. A special focus is placed on identifying key structural parameters affecting the thermal conductivities, including pore morphologies, pore sizes, and cell wall structures. Distinctive applications of 3D graphene and BN structures and their polymer-based composites for thermal energy management are highlighted along with their potential multifunctionalities other than thermal conduction or insulation. Th...

中文翻译：

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具有定制热导率的纳米复合材料的3D石墨烯和氮化硼结构：最新进展和观点

由二维（2D）的石墨烯和氮化硼（BN）纳米片合理地组装了各种三维（3D）结构，用于热能调节应用。包含这些3D体系结构的纳米复合材料提供的导热率跨越几个数量级，从超低值（用于超级隔热）到高值（用于快速散热）。在这篇综述中，我们总结了通过对3D石墨烯和BN组件的结构在不同的长度尺度上进行工程设计来实现两种极端导热率的方法。特别关注确定影响导热系数的关键结构参数，包括孔的形态，孔径和细胞壁结构。着重介绍了3D石墨烯和BN结构及其基于聚合物的复合材料在热能管理方面的独特应用，以及除导热或绝缘外的潜在多功能性。那个...