Rong Mingming, Chen Dongdong, Hu Hong, Chen Fan, Zhang Yaokang, Xie Chuan, Chen Zijian, Yu You, Xie Yujie, Yao Haimin, Huang Qiyao, Zheng Zijian
Laboratory for Advanced Interfacial Materials and Devices, School of Fashion and Textiles, The Hong Kong Polytechnic University, Hong Kong, SAR, 999077, China.
Key Laboratory of Synthetic and Natural Functional Molecule, Chemistry of the Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an, 710000, China.
Small. 2023 Dec;19(50):e2304353. doi: 10.1002/smll.202304353. Epub 2023 Aug 24.
Fiber-shaped conductors with high electrical conductivity, stretchability, and durability have attracted increasing attention due to their potential for integration into arbitrary wearable forms. However, these fiber conductors still suffer from low reliability and short life span, particularly in harsh environments. Herein, a conductive, environment-tolerant, stretchable, and healable fiber conductor (CESH), which consists of a self-healable and stretchable organohydrogel fiber core, a conductive and buckled silver nanowire coating, and a self-healable and waterproof protective sheath, is reported. Such a multilayer core-sheath design not only offers high stretchability (≈2400%), high electrical conductivity (1.0 × 10 S m ), outstanding self-healing ability and durability, but also possesses unprecedented tolerance in harsh environments including wide working temperature (-60-20 °C), arid (≈10 % RH (RH: room humidity)), and underwater conditions. As proof-of-concept demonstrations, CESHs are integrated into various wearable formats as interconnectors to steadily perform the electric function under different mechanical deformations and harsh conditions. Such a new type of multifunctional fiber conductors can bridge the gap in stretchable and self-healing fiber technologies by providing ultrastable electrical conductance and excellent environmental tolerance, which can greatly expand the range of applications for fiber conductors.
具有高导电性、拉伸性和耐久性的纤维状导体因其可集成到任意可穿戴形式中的潜力而受到越来越多的关注。然而，这些纤维导体仍然存在可靠性低和寿命短的问题，特别是在恶劣环境中。在此，报道了一种导电、耐环境、可拉伸且可自愈的纤维导体（CESH），它由自愈合且可拉伸的有机水凝胶纤维芯、导电且弯曲的银纳米线涂层以及自愈合且防水的保护鞘组成。这种多层核壳设计不仅具有高拉伸性（约2400%）、高导电性（1.0×10 S m）、出色的自愈能力和耐久性，而且在包括宽工作温度（-60至20°C）、干旱（约10%相对湿度（RH：室内湿度））和水下条件在内的恶劣环境中具有前所未有的耐受性。作为概念验证演示，CESH被集成到各种可穿戴形式中作为互连器，以在不同的机械变形和恶劣条件下稳定地执行电功能。这种新型多功能纤维导体通过提供超稳定的电导和出色的环境耐受性，可以弥合可拉伸和自愈纤维技术的差距，这可以极大地扩展纤维导体的应用范围。
