Pd/C catalyst, method for preparation Pd/C catalyst, its use in the reaction electroreduction of oxygen in fuel cells on formic acid and such a fuel cell

摘要

the subject invention is catalyst pd / c, especially for elektroredukcji oxygen cathode of fuel cells for formic acid, containing palladium deposited on the medium coal, whose specific activity on the cathode cell to formic acid is higher than the hitherto used activity him more expensive catalyst based on platinum, characterized by that,in this catalyst, a palladium metal activated in response elektroredukcji oxygen exists in the form of nanoparticles with sizes ranging from 2 nm to 15 nm, and the concentration of weight in the range of 10% by weight. to 60 wt%., and is deposited on the medium coal previously under optimised pre-treatment (funkcjonalizacji), advantageously concentrated nitric acid at a temperature 80u00b0c by 4 - 6 hours. in addition, the invention includes a method for pd / c catalyst and its application to the reduction of oxygen in the cell for formic acid, as well as a fuel cell.