PROCESS OF CARBONS FUNCTIONALIZATION BY THE GROWTH OF POLYMERIC CHAINS WITH ION EXCHANGE PROPERTIES FOR POLYMER ELECTROLYTE FUEL CELL APPLICATIONS

摘要

"PROCESS OF CARBONS FUNCTIONALIZATION BY THE GROWTH OF POLYMERIC CHAINS WITH ION EXCHANGE PROPERTIES FOR POLYMER ELECTROLYTE FUEL CELLS APPLICATIONS", that is related to the electrocatalysts for polymer electrolyte fuel cell technology, related to a chemical activation form of the carbon source surface, like carbon black, performing the growth of polymeric chains with proton exchange properties, and afterward to perform the anchoring of the electrocatalysts nanoparticles like Pt, PtRu and others, or by just a chemical activation of the carbon source surface by chemical oxidant reaction using oxidant agents like chromate ions, dichromate, permanganate, nitrate, halogens, hydrogen peroxide, and others, preferably nitric acid or hydrogen peroxide or its mixtures, or any reagent or technique that are able to produce oxygenated groups in the carbon surface. The main effect of this invention is the improvement of the ion conductivity in the three interfaces, consequently decreasing the ohmic drop of the system.