Foaming ink for 3D-printing of ultralight and hyperelastic graphene architectures: Multiscale design and ultra-efficient electromagnetic interference shielding.

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Tác giả: Xiaoxiao Chen, Zhaohui Chen, Dengguo Lai, Wenxuan Wang

Ngôn ngữ: eng

Ký hiệu phân loại: 920.71 Men

Thông tin xuất bản: United States : Journal of colloid and interface science , 2025

Mô tả vật lý:

Bộ sưu tập: NCBI

ID: 61744

Extrusion-based printing of macroscopic architectures layer-by-layer offers new opportunities for constructing customized electromagnetic interference (EMI) shielding materials. However, current research primarily focuses on improving the printability of material inks by increasing contents and adding various modifiers, controllable construction of ultralight and robust macro-architectures with structural design at both macro- and micro-scales is still challenging. Herein, we develop a graphene oxide foaming ink enriched with air bubbles for direct-ink writing, enabling the creation of macroscopic graphene architectures with arbitrary geometries. Meanwhile, air bubbles guide the self-assembly of nanosheets into a unique closed-cellular structure, which plays a critical role in enhancing EMI shielding performance. The resulting bubble-derived graphene aerogels (BGAs), fabricated through lyophilization and reduction of the foaming inks, exhibit ultralow densities of 0.0033-0.0045 g·cm
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