Li Yuhong, Wang Yang, Huang Yi
School of Materials Science and Engineering, National Institute for Advanced Materials, Nankai University, Tianjin, 300350, P. R. China.
Key Laboratory of Functional Polymer Materials, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin, 300350, P. R. China.
Small. 2025 Feb;21(5):e2410283. doi: 10.1002/smll.202410283. Epub 2024 Dec 18.
With the rapid development of mobile communication technology and wearable electronic devices, the electromagnetic radiation generated by high-frequency information exchange inevitably threatens human health, so high-performance wearable electromagnetic interference (EMI) shielding materials are urgently needed. The 2D nanomaterial MXene exhibits superior EMI shielding performance owing to its high conductivity, however, its mechanical properties are limited due to the high porosity between MXene nanosheets. In recent years, it has been reported that by introducing natural nanocellulose as an organic framework, the EMI shielding and mechanical properties of MXene/nanocellulose composites can be synergically improved, which are expected to be widely used in wearable multifunctional shielding devices. In this review, the electromagnetic wave (EMW) attenuation mechanism of EMI shielding materials is briefly introduced, and the latest progress of MXene/nanocellulose composites in wearable multifunctional EMI shielding applications is comprehensively reviewed, wherein the advantages and disadvantages of different preparation methods and various types of composites are summarized. Finally, the challenges and perspectives are discussed, regarding the performance improvement, the performance control mechanism, and the large-scale production of MXene/nanocellulose composites. This review can provide guidance on the design of flexible MXene/nanocellulose composites for multifunctional electromagnetic protection applications in the future intelligent wearable field.
随着移动通信技术和可穿戴电子设备的快速发展，高频信息交换产生的电磁辐射不可避免地威胁着人类健康，因此迫切需要高性能的可穿戴电磁干扰（EMI）屏蔽材料。二维纳米材料MXene因其高导电性而表现出优异的EMI屏蔽性能，然而，由于MXene纳米片之间的高孔隙率，其机械性能受到限制。近年来，有报道称，通过引入天然纳米纤维素作为有机骨架，可以协同提高MXene/纳米纤维素复合材料的EMI屏蔽性能和机械性能，有望在可穿戴多功能屏蔽设备中得到广泛应用。在这篇综述中，简要介绍了EMI屏蔽材料的电磁波（EMW）衰减机制，并全面综述了MXene/纳米纤维素复合材料在可穿戴多功能EMI屏蔽应用中的最新进展，总结了不同制备方法和各类复合材料的优缺点。最后，针对MXene/纳米纤维素复合材料的性能提升、性能控制机制和大规模生产等方面，讨论了面临的挑战和前景。这篇综述可为未来智能可穿戴领域中用于多功能电磁防护应用的柔性MXene/纳米纤维素复合材料的设计提供指导。
