Method for producing proton exchange film fuel cell core module

Abstract

The invention provides prodn. method of core component of proton interchange film full cell. The characteristic is to chemical reduct presoma salt of catalytic agent in aqueous solution of sulphonic acid type negative ion polymer with proton conducting ability to obtani ion modified nanometre catalytic agent particles, then to transfer ion modified nano catalytic agent particles to proton interchange film by method of brushing, ink-jet printing or transfering, or to fully mix ion modified nano catalytic agent and ethanediol, then to transfer it to proton interchange film or to static delectricity self assembly positive ino polymer on proton interchange film at first, then to soak the proton interchange film processed by positive ion polymer to aqueous dispersing liquid of ion modified nano catalytic agent to obtain core component used for proton interchange film fuel cell.

Description

technical field [0001] The invention relates to a manufacturing method of a core component of a proton exchange membrane fuel cell, which is characterized in that the surface of nano catalyst particles in the catalytic layer is modified with a sulfonated anion polymer with proton conductivity. Background technique [0002] In today's global energy crisis and deteriorating environment, improving resource utilization and reducing environmental pollution has become an important subject of scientific research. As a clean energy technology, fuel cell technology has become one of the hot spots of international high-tech competition. The fuel cell core component (Catalyst coated membrane, CCM) is the core component of the proton exchange membrane fuel cell (PEMFC), which consists of a proton exchange membrane and a catalytic layer coated on both sides of the membrane. In some early patents or other reports at home and abroad, the combination of the membrane and the catalytic layer...

AI Technical Summary

Problems solved by technology

[0004] It can be considered that the typical manufacturing method of the existing CCM is to prepare the Pt / C catalyst first, then mix the Pt / C catalyst with a proton-conducting resin (such as Nafion) and transfer it to the proton exchange membrane or gas diffusion electrode to form it. The conductive resin is not easy to be in close contact with the catalyst, and a large number of Pt catalysts are isolated in the micropores of porous carbon black, far away from the proton, electron, and gas three-phase channels necessary for catalytic reactions, and the efficiency is low, and its utilization rate is only 10%. ~20% [Electrochim.Acta, 2001, 46, 1657; J Mater.Res., 2004, 19, 2279]; for the CCM where the catalyst metal is directly transferred to the proton exchange membrane, due to the high surface Activity, the catalyst generally exists in the form of agglomerates or thin films, which reduces the surface active area of ​​the catalyst