High-dispersity fuel cell catalyst slurry and preparation method thereof

The invention provides a high-dispersity fuel cell catalyst slurry and a preparation method thereof. The preparation method of the catalyst slurry comprises the following steps: dissolving polyvinyl alcohol in deionized water, then adding activated carbon and heating and stirring in a water bath; reducing the water bath temperature and adding 2,3-epoxypropyltrimethylammonium chloride and continuously stirring, adjusting the pH value by using a sodium hydroxide solution, adding chloroplatinic acid, uniformly mixing, continuously adjusting the pH value to be neutral by using the sodium hydroxidesolution, adding a reducing agent, standing, carrying out centrifugal separation to obtain a solid product, and finally dispersing the solid product and propylene glycol amine in a mass ratio of 1: 10, and obtaining the catalyst slurry. The etherification modified polyvinyl alcohol provided by the invention has dispersion and thickening effects and strong adsorption capacity to platinum particles, and reduces platinum to