温州大学化学与材料工程学院

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祝贺王舜和金辉乐老师在Advanced Materials发表学术论文

发布时间:2018-07-26    来源:化学与材料工程学院    作者:    点击次    [点击关闭]

标题:Strong Graphene 3D Assemblies with High Elastic Recovery and Hardness

 

AbstactThe rational design and construction of 3D graphene assemblies is a crucial step to extend the graphene properties for practical applications. Here, a novel interfacially reactive selfassembling process is reported to prepare wellorganized 3D honeycomblike graphene assemblies with unique polygonal nanopores interconnected by siliconoxygen chemical bonds. The newly developed silicatebridged graphene assembly (SGA) exhibits an exceptionally high hardness of 13.09 GPa, outperforming all existing 3D graphene materials, while maintains high Young's modulus (162.96 GPa), elastic recovery (75.27%), and superb thermal stability (600 °C in air). The observed unusual merits are resulted from unique pore structure combining the mechanical stability of the trihedralnanopore structure and the deformability of the other polygonal nanopores. As a filling material, a merely 0.05% (w/w) addition of SGA could double the impact resistance of unsaturated resins (e.g., polyester). While SGA is attractive for various applications, including body armors, wearable electronics, space elevators, and multifunctional reinforcement fibers for automobiles, and aerospace vehicles, the novel liquid sodiumwater interfacial reactive selfassembling developed in this study could open avenues for further development of various welldefined 3D assemblies from graphene and many other materials.

 

原文链接:

https://doi.org/10.1002/adma.201707424