Kim Jiheon, Choi Yong, Jang Hoyoung, Jiong Sohyung, Chen Xinqi, Seo Byungseok, Choi Wonjoon
School of Mechanical Engineering, Korea University, Seoul, 02841, Republic of Korea.
Department of Materials Science and Engineering, The NUANCE Center, Northwestern University, Evanston, IL, 60208, USA.
Adv Mater. 2024 Nov;36(47):e2411248. doi: 10.1002/adma.202411248. Epub 2024 Oct 3.
The rapid development of wearable electronics, personal mobile equipment, and Internet of Things systems demands smart textiles that integrate multiple functions with enhanced durability. Herein, the study reports robust and multifunctional textiles with energy harvesting, electromagnetic interference (EMI) shielding, flame resistance, and Joule heating capabilities, fabricated by a facile yet effective integration method using the deposition of cross-linked MXene (TiCT), poly(vinyl alcohol) (PVA), and poly(acrylic acid) (PAA) onto traditional Korean paper, Hanji via vacuum filtration. Comprehensive analyses confirm robust cross-linking, structural integrity, and interface stability in the MXene/PVA/PAA-Hanji (MPP-H) textiles, which synergistically boost their multifunctional performance. The MPP-H textiles exhibit remarkable power generation lasting over 60 min with a power density of 102.2 µW cm and an energy density of 31.0 mWh cm upon the application of 20 µL of NaCl solution. The EMI shielding effectiveness (SE) per unit thickness in the X-band (8.2-12.4 GHz) is up to 437.6 dB mm, with the ratio of absorption to reflection reaching 4.5, outperforming existing EMI shielding materials. Superior thermo-chemo-mechanical properties (flame resistance, rapid Joule heating, durability, and washability) further demonstrate their versatile usability. The MPP-H enables diverse functionalities within a single, robust textile through a scalable fabrication method, offering transformative potential for wearable and mobility platforms.
可穿戴电子设备、个人移动设备和物联网系统的快速发展需要具有增强耐用性且集成多种功能的智能纺织品。在此，该研究报告了一种坚固耐用的多功能纺织品，其具有能量收集、电磁干扰（EMI）屏蔽、阻燃和焦耳加热功能，通过一种简便而有效的集成方法制造，即将交联的MXene（TiCT）、聚乙烯醇（PVA）和聚丙烯酸（PAA）通过真空过滤沉积到传统韩国纸张韩纸上。综合分析证实了MXene/PVA/PAA-韩纸（MPP-H）纺织品中强大的交联、结构完整性和界面稳定性，这些特性协同提升了它们的多功能性能。MPP-H纺织品在施加20μL NaCl溶液时，展现出持续超过60分钟的显著发电能力，功率密度为102.2 μW/cm²，能量密度为31.0 mWh/cm²。在X波段（8.2 - 12.4 GHz），每单位厚度的电磁干扰屏蔽效能（SE）高达437.6 dB/mm，吸收与反射之比达到4.5，优于现有的电磁干扰屏蔽材料。卓越的热化学机械性能（阻燃性、快速焦耳加热、耐久性和可洗性）进一步证明了它们的多功能实用性。MPP-H通过一种可扩展的制造方法，在单一坚固的纺织品中实现了多种功能，为可穿戴和移动平台提供了变革性潜力。
