Method for preparing proton exchange membrane fuel cell electrode with high catalyst utilization ratio

Abstract

The invention provides a method for preparing a proton exchange membrane fuel cell electrode with high catalyst utilization ratio, which comprises the following steps: firstly, constructing a gas porous electrode having a complete electron channel, a gas channel and a proton channel; secondly, exchanging platinum cations onto perfluorosulfonic acid resin of the gas porous electrode by an ion exchange method; thirdly, reducing the platinum cations onto a carbon carrier contacted with the perfluorosulfonic acid resin by an electrochemical reduction method, thus, the proton exchange membrane fuel cell electrode with high catalyst utilization ratio is prepared. The invention has the advantages of simple process and low cost. The proton exchange membrane fuel cell electrode with high catalyst utilization ratio prepared by using the invention has the advantages of high catalyst utilization ratio, low platinum capacity, good dispersion of platinum nano-particles, controllable size, and the like, and can replace the prior commercial platinum / carbon (Pt / C) catalyst.

Description

A kind of preparation method of high catalyst utilization rate proton exchange membrane fuel cell electrode 1. Technical field: The invention belongs to the technical field of fuel cells, and in particular relates to a preparation method of a proton exchange membrane fuel cell electrode with high catalyst utilization rate. 2. Background technology: Proton exchange membrane fuel cell (PEMFC) is a power generation device that converts chemical energy into electrical energy through electrochemical reactions. It has the advantages of high energy density, low operating temperature and good stability. It is used in mobile devices, electric vehicles (EV), Distributed power stations and other fields have broad application prospects. However, the high cost has always been one of the core problems that plague its real commercialization, and the main contribution of its high cost comes from the extensive use of platinum as an electrocatalyst. Due to the high price of platinum and th...

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Problems solved by technology

The purpose of the present invention is to provide a method for preparing a high catalyst utilization rate proton exchange membrane fuel cell electrode for the shortcomings of the existing direct electrodeposited platinum

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