Metal-Organic Framework Derived Multidimensional Carbon/Multifluorination Epoxy Nanocomposite with Electromagnetic Wave Absorption, Environmentally Adaptive, and Blue Energy Harvesting

Bimetallic metal-organic framework (MOF)-derived multidimensional composites have garnered tremendous attention in electromagnetic wave absorption owing to their remarkable attenuation capacity. And the diversified application scenarios require microwaves absorption materials (MAMs) with robust environmentally adaptive, but efficiently integrating multifunctionality within single MAMs is extremely challenging. Herein, a multifunctional CoC@FeNiG-F nanocomposite is fabricated by synergistic strategy of in situ growth, C-F & BULL;& BULL;& BULL;& pi; interaction and microwave irradiation. The MAMs exhibit a strong reflection loss of -75.18 dB with 3.95 GHz effective absorption bandwidth benefited from magnetic-dielectric attenuation, impedance matching, and multiple-reflection loss. Remarkably, it is first time to obtain the efficient MAMs accompanied with excellent mechanical (80.3 MPa), superamphiphobicity (153 & DEG; and 151 & DEG;), anticorrosion (45 d), and flame retardancy (V-0 rating), which illustrate that the combination of CoC@FeNiG 3D-skeleton and long-chain perfluorinated epoxy remarkably improve robust multifunctionality and environmentally adaptive. In particular, the MAMs are assembled into liquid-solid triboelectric nanogenerator, and the output performance (19.7 V, 1.68 & mu;A) and durability (10 000s) are obviously improved benefiting from the trap effect of carbonized MOF. Therefore, this work provides an efficient guideline for designing advanced MAMs with robust environmentally adaptive and sustainable energy harvesting performance in extreme environment application.

Automated summary

Bimetallic metal-organic framework-derived composites have attracted significant attention in electromagnetic wave absorption due to their excellent attenuation capacity. However, integrating multifunctionality within a single material is challenging for microwave absorption materials (MAMs) that need to adapt to various environments. In this study, a multifunctional nanocomposite (CoC@FeNiG-F) is fabricated using an in situ growth strategy, chemical interactions, and microwave irradiation. The MAMs exhibit strong reflection loss and effective absorption bandwidth, benefiting from magnetic-dielectric attenuation, impedance matching, and multiple-reflection loss. Furthermore, the MAMs demonstrate excellent mechanical properties, superamphiphobicity, anticorrosion, flame retardancy, and improved energy harvesting performance in extreme environments. This work provides valuable guidance for designing advanced MAMs with robust adaptability and sustainable energy harvesting performance.