Kelp‐Like Carbon Nanoribbons Superstructures With Embedded Ni Nanoparticles for Intelligent Flexible Electromagnetic Protection and Sensing Applications

To ensure the effective operation of equipment in dynamic electromagnetic environments, the development of intelligent electromagnetic protection materials is crucial. However, inherent contradictions often exist between electromagnetic response technologies across different frequency bands and electronic sensing technologies, making the compatibility of multiple technologies a persistent challenge. Inspired by the structure and function of kelp, this study successfully develops a two‐dimensional nanocarbon ribbon superstructure embedded with nickel nanoparticles (2D Ni@NCRS) through the one‐step pyrolysis of bulk Ni‐MOFs, effectively addresses the aforementioned contradictions. This biomimetic kelp‐like structure features interconnected nanocages and a porous architecture, significantly enhances the electromagnetic wave (EMW) attenuation capability and impedance matching characteristics of the materials, thereby achieves exceptional EMW absorption performance. Furthermore, the functional film based on 2D Ni@NCRS fully leverages the conductive network, thermal insulation properties, and ultraviolet absorption characteristics of the materials, simultaneously enables multifunctional capabilities such as gigahertz‐infrared‐compatible stealth, ultraviolet protection, and flexible strain sensing. This innovative design integrates electromagnetic stealth protection, environmental camouflage, and sensing into a unified system, enables multifunctional synergies and enhances the potential for integrated material applications in complex environments.