公开(公告)号：US12054887B2

公开(公告)日：2024-08-06

申请号：US18327080

申请日：2023-06-01

Applicant: ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Daliang Guo ,  Lizheng Sha ,  Huifang Zhao ,  Jing Li ,  Yinchao Xu ,  Xin Zhang ,  Bei Liu ,  Tianzhong Yuan ,  Ziyang Chang ,  Qianyu Sun ,  Yahui Meng

IPC: D21H13/50 ,  D21H25/06

CPC classification number: D21H13/50 ,  D21H25/06

Abstract: Disclosed is a preparation method of double-layer carbon-paper base paper with high uniformity and gradient pores, including adding carbon fibers to alkali lignin aqueous solution for treatment, controlling the alkali lignin aqueous solution to reach subcritical water conditions, and modifying the carbon fibers by sodium phenol reactive groups under the subcritical water conditions of the alkali lignin, for improving hydrophilic groups on a surface of the carbon fibers and a surface rough structure; further, modifying the carbon fibers to produce carbon nanotube clusters on the surface of the carbon fibers to obtain surface-thermally-modified carbon fibers, and adding the surface-thermally-modified carbon fibers to a dispersant for dispersion, stirring together with auxiliary materials to prepare a mixed slurry, and preparing the mixed slurry into the carbon-paper base paper by wet forming process.