公开(公告)号：US11448959B2

公开(公告)日：2022-09-20

申请号：US17259326

申请日：2019-07-01

Applicant: KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Wenli Zhang ,  Yongjiu Lei ,  Husam Niman Alshareef

IPC: G03F7/00 ,  G03F7/038 ,  G03F7/30 ,  C08L29/04 ,  C08L97/00 ,  G03F7/039 ,  G03F7/20 ,  G03F7/26 ,  H01G11/36 ,  C01B32/182 ,  G03F7/32

Abstract: There is a method for forming a three dimensional or porous graphene electrode pattern on a substrate, the method including providing a substrate; coating the substrate with a lignin-polymer composite film; exposing a first part of the coated lignin-polymer composite film to a laser beam for transforming the first part into the graphene pattern; and removing a second part of the coated lignin-polymer composite film, which was not exposed to the laser beam, by placing the second part in water. The lignin-polymer composite film includes (1) a water-soluble alkaline lignin, (2) a polymer having bonding properties, and (3) a solvent, and an amount of the water-soluble alkaline lignin in the lignin-polymer composite film is between 5 and 60% by weight.