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Research Article | Open Access

Ultralight and superelastic MXene/reduced graphene oxide aerogels for electromagnetic interference shielding

Xinfeng Zhou1,2,§, Yang Dai1,†,§, Guoyao Yue1, Yiman Zhang1, Lulu Li2,‡, Zhong-Zhen Yu1,2, Peng Min1 ( ), Hao-Bin Zhang1,2 ( )
State Key Laboratory of Organic-Inorganic Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
Beijing Key Laboratory of Advanced Functional Polymer Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
Present address: BOE Technology Innovation Center, BOE Technology Group Co., Ltd., Beijing 100176, China
Present address: Xi’an Modern Chemistry Research Institute, Xi’an 710065, China

§ Xinfeng Zhou and Yang Dai contributed equally to this work.

Show Author Information

Graphical Abstract

The air bubble-ice crystal dual template and annealing strategy endow transition metal carbides/nitrides (MXene) composite aerogel with unique Y-shape joints, robust skeleton, and strong interlayer interactions, which afford a unique integration of ultra-low density and high resilience. The electron bridging effect of the reduced graphene oxide (RGO) sheets confers the aerogel with excellent electromagnetic interference shielding performance.

Abstract

Lightweight aerogels feature multifunctionality and a high porosity, yet accompanied with poor structure recovery under large strain deformations. In this work, we develop an air bubble-ice crystal dual template and annealing strategy to integrate low density and high resilience for the conductive transition metal carbides/nitrides (MXene) composite aerogels. The air bubbles and ice crystals synergistically exclude the nanosheets to the gas-liquid interfaces, thereby constructing unique Y-shaped junctions and robust skeleton. Subsequent annealing process greatly enhances the interlayer interactions. Under external load, the Y-shaped structures prevent the stress concentration at the junctions by transferring the forces to the skeleton for maintaining structural stability. In addition, the wrinkled and thick cell walls, together with the enhanced interlayer interactions, endow the aerogel with exceptional structural stability and resilience. As a result, the MXene/reduced graphene oxide (RGO) composite aerogels exhibit superelasticity with reversible compressive strains of up to 95%. In addition, the electron bridging effect of the RGO sheets affords the aerogel to deliver excellent electromagnetic interference shielding performance, as high as 46.3 dB at 2.5 mm. Furthermore, the remarkable reshapeability of the aerogels allows for precise regulation of structure and performance (33.5–75.1 dB) by a simple wetting compression process. In summary, this work offers helpful inspirations for developing lightweight and superelasticity aerogels for extensive applications.

Keywords

lightweightsuperelasticityMXene aerogelelectromagnetic interference shieldingreshapeability

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Nano Research
Volume 18 Issue 1,
January 2025
Article number: 94907009
DOI: 10.26599/NR.2025.94907009
Cite this article:
Zhou X, Dai Y, Yue G, et al. Ultralight and superelastic MXene/reduced graphene oxide aerogels for electromagnetic interference shielding. Nano Research, 2025, 18(1): 94907009. https://doi.org/10.26599/NR.2025.94907009
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Received: 20 July 2024
Revised: 26 August 2024
Accepted: 27 August 2024
Published: 23 December 2024
© The Author(s) 2025. Published by Tsinghua University Press.

This is an open access article under the terms of the Creative Commons Attribution 4.0 International License (CC BY 4.0, https://creativecommons.org/licenses/by/4.0/).
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