Key Laboratory of Bio-inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry and Environment, BeiHang University , Beijing 100191, P.R. China.
Department of Materials Science and Engineering, College of Engineering Peking University , Beijing 100871, P. R. China.
ACS Nano. 2015 Dec 22;9(12):11568-73. doi: 10.1021/acsnano.5b05252. Epub 2015 Nov 4.
With its synergistic toughening effect and hierarchical micro/nanoscale structure, natural nacre sets a "gold standard" for nacre-inspired materials with integrated high strength and toughness. We demonstrated strong and tough ternary bioinspired nanocomposites through synergistic toughening of reduced graphene oxide and double-walled carbon nanotube (DWNT) and covalent bonding. The tensile strength and toughness of this kind of ternary bioinspired nanocomposites reaches 374.1 ± 22.8 MPa and 9.2 ± 0.8 MJ/m(3), which is 2.6 and 3.3 times that of pure reduced graphene oxide film, respectively. Furthermore, this ternary bioinspired nanocomposite has a high conductivity of 394.0 ± 6.8 S/cm and also shows excellent fatigue-resistant properties, which may enable this material to be used in aerospace, flexible energy devices, and artificial muscle. The synergistic building blocks with covalent bonding for constructing ternary bioinspired nanocomposites can serve as the basis of a strategy for the construction of integrated, high-performance, reduced graphene oxide (rGO)-based nanocomposites in the future.
具有协同增韧效应和分级微/纳尺度结构的天然珍珠层为具有综合高强度和韧性的珍珠层启发材料设定了“黄金标准”。我们通过协同增韧还原氧化石墨烯和双壁碳纳米管（DWNT）以及共价键合，展示了强韧的三元仿生纳米复合材料。这种三元仿生纳米复合材料的拉伸强度和韧性分别达到 374.1 ± 22.8 MPa 和 9.2 ± 0.8 MJ/m3，分别是纯还原氧化石墨烯薄膜的 2.6 倍和 3.3 倍。此外，这种三元仿生纳米复合材料还具有 394.0 ± 6.8 S/cm 的高导电性，并且表现出优异的耐疲劳性能，这使得该材料可用于航空航天、柔性能源设备和人造肌肉。用于构建三元仿生纳米复合材料的具有共价键合的协同构建块可以作为未来构建集成的、高性能的基于还原氧化石墨烯(rGO)的纳米复合材料的策略的基础。
