Wu, L.; Qin, H.; Li, Y.; Zhao, J.; Sun, M.; Li, P.; Zhai, X.; Wen, Y.; Wang, X.; Lin, C.; Li, Y. Thermal-Sensitive Artificial Ionic Skin with Environmental Stability and Self-Healing Property. ACS Appl. Mater. Interfaces 2025, 17, 9115–9124.

Publication time：2025-03-27     Reading times：     Font：【BigMediumSmall】

In January 2025, Lidong Wu’s group and Yuan Li’s group developed a thermal-sensitive artificial ionic skin (PIL@CNT) based on ionic liquids ([EMIm][BF?]) and carbon nanotube (CNT) fillers. By integrating CNTs into a polyacrylic acid (PAA)-ionic liquid network, the material achieved dual thermal conduction pathways, enabling a rapid thermal response (16 s) and high thermal sensitivity (5%/°C). The design leveraged hydrogen bonding and electrostatic interactions to enhance environmental stability and self-healing properties (90% efficiency). Compared to traditional hydrogels and ionic gels, PIL@CNT demonstrated superior resistance to water evaporation, stable performance at 85°C, and accurate temperature monitoring in biological and extreme environments (e.g., mice body temperature and cold outdoor conditions). This work addresses the limitations of conventional materials, such as slow response and poor durability, offering a robust platform for applications in robotics, healthcare monitoring, and adaptive wearable devices.

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