Abstract Graphitic solids are typically produced via high temperature and energy consuming processing (e.g. sintering) of carbon particles. Here, we demonstrate the mechano-chemical assembly of functionalized graphene layers into 3D graphitic solids via room temperature and low energy consuming processing. The chemical functional groups on graphene layers are interconnected at room temperature under pressure leading to porous three-dimensional structures with tunable mechanical and electrical properties. The formation of mechano-chemistry induced atomic scale junctions and their impact on mechanical properties of graphene assembled carbon materials are demonstrated through nano-indentation experiments and confirmed using DFT and molecular dynamics simulations. The results show room temperature consolidation routes of graphene layers into bulk carbon solids.

中文翻译：

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通过机械化学在环境温度下固结功能化石墨烯

摘要 石墨固体通常通过碳颗粒的高温和耗能加工（例如烧结）生产。在这里，我们展示了通过室温和低能耗加工将功能化石墨烯层机械化学组装成 3D 石墨固体。石墨烯层上的化学官能团在室温和压力下相互连接，形成具有可调机械和电性能的多孔三维结构。通过纳米压痕实验证明了机械化学诱导的原子级结的形成及其对石墨烯组装碳材料机械性能的影响，并使用 DFT 和分子动力学模拟进行了证实。