A hot press forming process for the production of fuel cell membrane electrodes

Abstract

The invention discloses a hot press forming process for the production of fuel cell membrane electrodes, including the laying of the outer frame, the pretreatment of the proton exchange membrane, the hot press treatment and the air cooling verification treatment; The outer frame composed of industrial filter paper, tetrafluoromembrane and thin steel plate is in contact with the primary membrane electrode composed of carbon paper, proton exchange membrane and polyester frame laid according to the preset requirements, and this laying and contact method, It can effectively avoid the glue material or the polyester frame in the primary membrane electrode and the thin steel plate in the outer frame from sticking to each other in a high temperature environment, and it can protect the product while ensuring the flatness of the product. After pre-vulcanization molding and then vulcanization molding operation, and under two hot pressing operations, it can effectively avoid defects such as bubbles and protrusions due to uneven pressure or excessive pressure during one molding process, which greatly improves the thermal stability. Pressure quality.

Description

technical field [0001] The invention relates to the technical field of membrane electrodes, in particular to a hot pressing forming process for producing fuel cell membrane electrodes. Background technique [0002] The fuel cell converts the free energy in the chemical energy of the fuel into electrical energy through an electrochemical reaction, and is not limited by the Carnot cycle effect, so the work efficiency is extremely high, and the fuel cell uses fuel and oxygen as raw materials, without mechanical transmission parts , so there is no noise pollution and harmful gas emissions. Therefore, from the perspective of saving energy and protecting the ecological environment, fuel cells are the most promising power generation technology, and the hot pressing process used in the production of fuel cell membrane electrodes is one of the important factors that determine product quality. [0003] In the existing hot-pressing forming process used for the production of fuel cell ...

AI Technical Summary

Problems solved by technology

[0003] In the existing hot pressing forming process for the production of fuel cell membrane electrodes, there are problems of poor hot pressing quality and low hot pressing accuracy

Among them, most of the existing hot-pressing operations are one-time molding, which is prone to uneven pressure or excessive pressure, and the glue is prone to sticking during the curing process; and it cannot ensure that the parts to be hot-pressed are easy to take and place At the same time, there will be no offset during the hot pressing process

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