Abstract Scope |
Laser-induced graphene (LIG) is a promising electrode material for supercapacitors and electronics. However, enhancing its energy storage performance remains a challenge due to limited surface area, especially when using polyimide film as the precursor, which is difficult to modify. In this study, we present a novel LIG formation method using a low-power diode laser and polyimide powder. The powder precursor allows for easy application to any surface, either through electrostatic attraction or with the aid of an adhesive layer. By employing this technique, we can create multi-layered electrodes by repeating the powder application and laser irradiation cycles, leading to higher energy density supercapacitor devices. Additionally, the powder precursor enables one-step doping with metal salt through physical blending, further enhancing the energy storage properties of the supercapacitors. |