[22p-C301-1~17] 3.6 Laser processing (formerly 3.7)

[22p-C301-1] Hydrogel Supercapacitor Fabricated by Lignin-mediated Laser-induced Graphitization

〇(M2)Rikuto Miyakoshi¹, Shuichiro Hayashi¹, Terakawa Mitushiro^1,2 (1.Grad. Sch. Keio Univ., 2.Keio Univ.)

Keywords:laser-induced graphene, hydrogel, energy storage device

Hydrogels are one of the promising materials to be used for supercapacitors since they can easily retain liquid electrolytes. We demonstrated the direct fabrication of electrically conductive structures on agarose/lignin hydrogels by laser-induced graphitization. The addition of lignin increases the absorbed energy, as well as the carbon content, which may lead to the facilitation of graphitization. The structures fabricated from agarose/lignin hydrogels containing electrolytes were applied for supercapacitors.