College of Engineering and Applied Sciences, State Key Laboratory of Analytical Chemistry for Life Science, and Jiangsu Key Laboratory of Artificial Functional Materials, Nanjing University, Nanjing 210046, China.
College of Chemical Engineering and Technology, Engineering Research Center of Seawater Utilization Technology of Ministry of Education, State Key Laboratory of Reliability and Intelligence of Electrical Equipment, Hebei University of Technology, Tianjin 300130, China.
ACS Appl Mater Interfaces. 2022 Dec 28;14(51):57290-57298. doi: 10.1021/acsami.2c18761. Epub 2022 Dec 15.
The silver nanowire (Ag NW)/elastomer nanocomposite represents a prototypical form of a compliant conductor for flexible and stretchable electronic devices. The widespread implementations are currently hindered by the complicated procedures to effectively disperse Ag NWs into elastomer matrices. In this study, we report a facile and scalable coating process to create Ag NW nanocomposites on various flexible/stretchable substrates. As-synthesized Ag NWs from the high-yield polyol-reduction approach are homogeneously dispersed into a variety of dilute elastomer solutions, thereby enabling direct spray deposition into highly compliant conductors. The as-prepared nanocomposite exhibits excellent conductivity (∼11,000 S/cm) and high deformability to 100% strain. The stable electrical properties are largely retained under repetitive mechanical manipulations including stretching, bending, and folding. The patterned features of conductive nanocomposites are conveniently accessed using shadow masks or selective laser ablation. The practical suitability is demonstrated by the successful implementations of a stretchable sensing patch and a flexible light-emitting diode display.
银纳米线（Ag NW）/弹性体纳米复合材料是一种典型的用于柔性和可拉伸电子设备的顺应性导体。目前，广泛的应用受到将 Ag NW 有效分散到弹性体基质中的复杂工艺的限制。在这项研究中，我们报告了一种简便且可扩展的涂层工艺，可在各种柔性/可拉伸基板上制备 Ag NW 纳米复合材料。通过高产率的多元醇还原方法合成的 Ag NW 均匀分散在各种稀弹性体溶液中，从而能够直接喷涂到高弹性导体上。所制备的纳米复合材料表现出优异的导电性（约 11000 S/cm）和高达 100%应变的高可变形性。在包括拉伸、弯曲和折叠在内的重复机械操作下，稳定的电性能基本保持不变。使用阴影掩模或选择性激光烧蚀可以方便地获得导电纳米复合材料的图案特征。通过成功实施可拉伸传感器贴片和柔性发光二极管显示器，证明了其实际适用性。
