Zhang Limei, Jia Kun, Wang Jiao, Zhao Jiayou, Tang Jingda, Hu Jian
State Key Laboratory for Strength and Vibration of Mechanical Structures, Department of Engineering Mechanics, Xi'an Jiaotong University, Xi'an 710049, China.
Mater Horiz. 2022 Jul 4;9(7):1911-1920. doi: 10.1039/d1mh01775f.
Transparent heaters (THs) are widely used for various applications, such as in smart windows, deicers, defoggers, displays, and thermotherapy pads. The rapid development of flexible electronics has led to a demand for flexible and even stretchable THs. At present, most stretchable THs are designed using a combination of electronically conductive networks and flexible polymer materials. Electronic THs still face common challenges, such as a transparency-conductance trade-off, non-uniform heating, and poor interfacial adhesion. In this work, an ionic TH is reported based on a stretchable and transparent ionogel. Joule heating from an ionic current induced by alternating voltage functions as the heating source. This ionogel-based TH exhibits excellent and steady mechanical, optical, electrical, and thermal properties, simultaneously solving the abovementioned three problems relating to electronic THs. Two simple applications of this ionogel-based TH are demonstrated: deicing and boiling water. This reported ionogel-based TH provides a new material choice and heating principle to compete with conventional electronic TH technology.
透明加热器（THs）被广泛应用于各种领域，如智能窗户、除冰器、除雾器、显示器和热疗垫等。柔性电子学的快速发展引发了对柔性甚至可拉伸透明加热器的需求。目前，大多数可拉伸透明加热器是通过将导电网络与柔性聚合物材料相结合来设计的。电子透明加热器仍然面临一些常见挑战，如透明度与电导率的权衡、加热不均匀以及界面附着力差等问题。在这项工作中，报道了一种基于可拉伸透明离子凝胶的离子透明加热器。由交流电压感应产生的离子电流产生的焦耳热作为加热源。这种基于离子凝胶的透明加热器具有优异且稳定的机械、光学、电学和热学性能，同时解决了与电子透明加热器相关的上述三个问题。展示了这种基于离子凝胶的透明加热器的两个简单应用：除冰和烧水。报道的这种基于离子凝胶的透明加热器为与传统电子透明加热器技术竞争提供了一种新的材料选择和加热原理。
