Novel Synthesis method of Pt/C catalyst, catalyst and PEMFC using the same

摘要

The present invention relates to a method for preparing a platinum / carbon catalyst, comprising: dissolving urea in water to prepare an aqueous urea solution, dispersing a carbon carrier in an aqueous urea solution, and injecting chloroplatinic acid to hydrolyze the urea. The hydroxy ions and the chloroplatinic acid are hydrated to react with ions of a specific chemical formula to synthesize chlorinated hydride platinum compounds, adsorbing on a carbon carrier, and injecting ethylene glycol to ethylene glycol. Reducing the platinum chloride chloride compound to the platinum particles, the particle size and distribution of the particle size is characterized in that it is determined by the amount of urea dissolved in the aqueous urea solution.;The platinum / carbon catalyst prepared by the production method of the present invention can maintain the particle size and particle size distribution of the platinum particles while increasing the amount of platinum supported thereon, and improve the dispersion degree of the platinum particles, thereby providing an electrochemical active area of the catalyst. It is possible to increase the activity of the catalyst significantly by increasing the power density of the proton exchange membrane fuel cell. In addition, since it is made of a simple process by a one-pot in an aqueous solution of a relatively low temperature, it is possible to reduce the production cost of the platinum / carbon catalyst, has the advantage of an environmentally friendly process.