Xu Rui, Lu Hao, Zheng Zhuo, Zhou Tao
State Key Laboratory of Polymer Materials Engineering of China, Polymer Research Institute, Sichuan University, Chengdu 610065, China.
ACS Appl Mater Interfaces. 2025 Jan 8;17(1):2436-2449. doi: 10.1021/acsami.4c14439. Epub 2024 Dec 16.
Laser-induced graphene (LIG) has attracted extensive attention as an electrode material. However, it usually exhibits limited electrochemical performance in many applications due to the limited electrical conductivity and charge storage properties. Herein, we proposed a simple and environmentally friendly strategy for in situ preparation of flexible Au/LIG/PI layered hybrid materials using laser direct writing. The transformation from hydrophobic to superhydrophilic of hybrid materials was successfully achieved. At a laser power of 6.0 W during laser reirradiation, the contact angle of the prepared Au/LIG/PI layered hybrid material was 0°. Characterizations confirmed a formed continuous Au layer covered on the porous LIG skeleton with a uniform distribution. The superhydrophilicity resulting from this unique microstructure greatly enhanced the electrochemical performance of the microsupercapacitors (MSCs) designed and fabricated based on Au/LIG/PI hybrid materials. Meanwhile, this MSC demonstrated excellent flexibility due to the PI substrate. The in situ preparation of superhydrophilic Au/LIG/PI layered hybrid materials provides a strategy for improving the performance of LIG-based MSCs, thereby enhancing their application potential.
激光诱导石墨烯（LIG）作为一种电极材料已引起广泛关注。然而，由于其有限的电导率和电荷存储性能，在许多应用中它通常表现出有限的电化学性能。在此，我们提出了一种简单且环保的策略，即使用激光直写原位制备柔性Au/LIG/PI层状杂化材料。成功实现了杂化材料从疏水到超亲水的转变。在激光再辐照期间，当激光功率为6.0 W时，所制备的Au/LIG/PI层状杂化材料的接触角为0°。表征证实形成了覆盖在多孔LIG骨架上且分布均匀的连续Au层。这种独特微观结构产生的超亲水性极大地增强了基于Au/LIG/PI杂化材料设计和制造的微型超级电容器（MSC）的电化学性能。同时，由于PI基底，该MSC表现出优异的柔韧性。超亲水Au/LIG/PI层状杂化材料的原位制备为提高基于LIG的MSC的性能提供了一种策略，从而增强了它们的应用潜力。
