中文摘要：

日益流行的柔性电子器件要求在反复变形状态下,材料仍能保持优异的力学和电学性能.而石墨烯作为一种二维（two dimensional,2D）碳纳米片,具有独特的力学和电学性能,成为构筑此类柔性电子器件的首选基元材料.然而,如何将石墨烯纳米片组装成高性能的石墨烯纳米复合材料,仍然存在巨大挑战.天然鲍鱼壳因其内部有序规整的层状结构和丰富的界面相互作用,而具有综合优异的力学性能.这种独特的界面结构设计,为2D纳米片仿生组装提供了新的思想源泉.本文按照＂有所发现,有所发明,有所创造＂的学术研究思路,总结了最近几年国内外课题组关于仿生石墨烯纳米复合材料（bioinspired graphene-based nanocomposites,BGBNs）的研究进展;分析了石墨烯层间不同的界面相互作用;详细讨论了基于协同效应,仿生构筑强韧一体化石墨烯纳米复合材料的策略;重点阐述了BGBNs的拉伸强度、韧性以及电导率等基本物理性能.最后,本文也简单概括了BGBNs在柔性电子器件领域的应用和潜在的挑战,并展望了BGBNs未来的发展方向.

英文摘要：

The increasingly popular flexible electronic devices, such as electronic papers, touch screens, roll-up displays, and wearable sensors, etc., require maintaining high performance, including mechanical and electrical properties, under repeatable deformation state. Graphene, as a two dimensional（2D） carbon nanomaterial with integrated high mechanical properties and electrical conductivity, could serve as the ideal building block for constructing functional materials in application of flexible electronic devices. There have been several attempts to use graphene-based nanocomposites in these devices. However, their assembly using traditional approaches, exhibit relatively poor mechanical and electrical properties, which largely limits the efficiency of these devices. Thus, it remains a great challenge to assemble microscopic graphene nanosheets into macroscopic high performance graphene-based nanocomposites. As known, the performance usually depends on the unique structure of materials, especially for the nanocomposites. Thus, it will be the next hot-topic that how to achieve the high performance flexible electronic device through designing and constructing the unique structures of graphene-based nanocomposites. Nacre, the ＂gold standard＂ for biomimicry with both high strength and toughness, has been the source of inspiration for designing many synthetic hybrid materials and nanocomposites. This is achieved through a precise architecture that resembles that of a brick wall, and the clever design of the interface. Compared to other approaches for constructing graphene-based nanocomposites, this bioinspired concept results in good dispersion, high loading and excellent interfacial interaction design. The resultant bioinspired graphene-based nanocomposites（BGBNs） demonstrate significant enhancement in mechanical and electrical properties. In this review, we summerize recent research progress on the BGBNs, following the research philosophy of discovery, invention, creation. Firstly, we analyze in detail the s