US 12,381,230 B2
Method for producing membrane electrode
Guanghui Song, Shandong (CN); Zhongqiang Liu, Shandong (CN); Yajun Bai, Shandong (CN); Guangpeng Shi, Shandong (CN); Tao Cui, Shandong (CN); Dalong Wang, Shandong (CN); and Chengguang Wang, Shandong (CN)
Filed by HOACO Automation Technology LLC, Sugar Land, TX (US)
Filed on Sep. 9, 2022, as Appl. No. 17/931,077.
Prior Publication US 2023/0216064 A1, Jul. 6, 2023
Int. Cl. H01M 4/88 (2006.01)
CPC H01M 4/8896 (2013.01) [H01M 4/8825 (2013.01); H01M 4/8875 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A method for producing a membrane electrode, said method comprising a thermal transfer printing step, a thermal combining step, a carbon paper attaching step and a hot pressing step; wherein said thermal transfer printing step comprises:
S11: performing thermal transfer printing on a material A and a material B, so that an anode catalyst layer on said material B is thermal transfer printed to a proton exchange membrane of said material A, forming a post-material A after thermal transfer printing;
S12: performing rolling of said post-material A after thermal transfer printing and said material B to ensure that said anode catalyst layer on said material B is firmly combined with said proton exchange membrane of said material A, and winding said post-material A after thermal transfer printing and rolling;
wherein said thermal combining step comprises:
S21: manufacturing an upper frame material strip and a lower frame material strip, discharging said post-material A after thermal transfer printing after winding from step S12 and cutting into designed shape sheets, attaching said post-material A after thermal transfer printing after winding after cutting into sheet shape to the top of said lower frame material strip, applying heating and rolling; and
S22: placing said upper frame material strip on top of said post-material A after thermal transfer printing, applying heating and rolling to said upper frame material strip, said post-material A after thermal transfer printing and said lower frame material strip together to form a semi-finished material strip, and winding said semi-finished material strip;
wherein said carbon paper attaching step comprises:
S31: discharging said semi-finished material strip after winding from step S22, and attaching plurality of carbon paper to the top and the bottom of said semi-finished material strip; and
S32: by heating and rolling, compounding said semi-finished material strip after attaching said plurality of carbon paper, cutting said semi-finished material strip into a sheet material with a designed shape, and collecting said sheet material;
and wherein said hot pressing method comprises:
S41: performing hot pressing on said sheet material collected in step S32 to create a finished membrane electrode product;
wherein said upper frame material strip and said lower frame material strip in said thermal combining method are manufactured in steps comprising:
S51: performing rolling and conveying on a pressure-sensitive double-sided adhesive material strip, a release film, and a silicon protective film tape together, performing frame cutting after rolling and conveying, and performing winding of frame scraps after frame cutting; and
S52: after placing a PEN hot melt adhesive on the surface of said material strip after frame cutting from step S51, performing outline cutting of said PEN hot melt adhesive, performing rolling an included film of said PEN hot melt adhesive after frame cutting, and taking said material strip after frame cutting as an upper frame material strip or a lower frame material strip.