公开(公告)号：US20210066726A1

公开(公告)日：2021-03-04

申请号：US16552477

申请日：2019-08-27

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Nagappan Ramaswamy ,  Roland J. Koestner ,  Swaminatha P. Kumaraguru

IPC: H01M4/88 ,  C08J3/24 ,  C08K5/23 ,  C08K5/3472 ,  C08K5/31 ,  H01M4/86

Abstract: Systems, methods, fuel cells, and mixtures to inhibit ionomer permeation into porous substrates using a crosslinked ionomer are described. A method includes preparing an ionomer premix, mixing a crosslinking additive with the ionomer premix to thereby form a crosslinked-ionomer solution, and adding catalyst particles to the crosslinked-ionomer solution to produce a catalyst ink. The ionomer premix includes an ionomer dispersed within a solvent. The catalyst ink includes the catalyst particles distributed homogenously therethrough. The catalyst ink may be cast onto a porous substrate and dried to thereby form a catalyst layer for use in a fuel cell.