A kind of porous carrier of electrode catalyst for proton exchange membrane fuel cell

Abstract

The invention discloses a porous carrier of an electrode catalyst for a proton exchange membrane fuel cell, and solves the problems of operational complexity of the conventional carrier preparation process, and high probability of affecting use efficiency of a catalyst and causing positioning of the catalyst when the prepared carrier is loaded with the catalyst. The porous carrier is obtained by the steps of enabling toluenesulfonyl chloride and SiO<2> to be reacted with Vulcan XC-72, then reacting with polydimethyl siloxane and azobisisobutyronitrile, and finally reacting with dimethyl sulfoxide and ethylene glycol dimethacrylate, The porous carrier has a volatility-regulating-controlling porous structure, so that the loading time and thickness can be regulated and controlled after the carrier is dissolved by solvents of different proportions. The porous carrier of the electrode catalyst for the proton exchange membrane fuel cell provided by the invention is high in affinity on the catalyst, high in conduction effect, capable of effectively improving catalytic activity of the catalyst, also has simple operation of the preparation process and low cost, and is worthy of popularization.

Description

technical field [0001] The invention relates to the technical field of proton exchange membrane fuel cells, in particular to a porous carrier of an electrode catalyst for a proton exchange membrane fuel cell. Background technique [0002] Proton exchange membrane fuel cell (PEMFC) has a higher specific power than other fuel cells due to its low operating temperature, fast start-up, and no electrolyte loss. It can be used as a power source for both fixed power stations and mobile vehicles. Become one of the most competitive power sources to replace the current car power. At present, many countries and cities around the world, such as London, Vancouver, Canada, and Stuttgart, Germany, have launched fuel cell-powered bus lines, and many countries have demonstrated fuel cell vehicles in trial operation. China has also successfully launched fuel cell-powered buses and cars during the Beijing Olympic Games and Shanghai World Expo, and more than 1,000 vehicles have been put into t...

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Problems solved by technology

[0004] For above-mentioned situation, in order to overcome the defective of prior art, the purpose of the present invention is exactly to provide a kind of porous carrier of electrode catalyst of proton exchange membrane fuel cell, and purpose is to solve the complicated operation of traditional carrier preparation process, when the prepared carrier supports catalyst, it is easy to Problems that hinder the use efficiency of the catalyst and easily cause catalyst poisoning

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