METHOD OF PT LOADING ON THE FUNCTIONALIZED CNT, PT/CNT CATALYSTS AND PEMFC USING THE SAME

摘要

PURPOSE: A carbon nano tube-supported platinum catalyst, method thereof, and proton exchange membrane fuel cell comprises the same are provided to upgrade greatly the activity of catalytic by dispersing small particles of platinum supported greatly and evenly to the carbon nano tube through the functional noncovalent bonding surface of carbon nano tube, the in situ adjustment of pH, and the in situ production of reducing agent. They are also provided to enhance the efficiency and power density of fuel cell by applying the catalyst to the proton exchange membrane. CONSTITUTION: A manufacturing method of carbon nano tube-supported platinum catalyst comprises the following steps. Obtaining carbon nano tube which surface-finished with sodium dodecyl sulfate surface by suspending the carbon nano tube in the aqueous solution of sodium dodecyl sulfate and processing this tube with ultrasonic wave; After diffusing carbon nanotube in the urea aqueous solution by progressing ultrasonic treatment, add chloroplatinic acid(IV)(H2PtCl6.6H2O) to obtain mixed solution, and absorb the compound of chloridation hydroxide hydration platinic to the carbon nano tube by heating the mixed solution to hydrolyze urea; the procedure of Injecting ethylene glycol into the mixed solution, stirring, and heating the chloridation hydroxide hydration platinic compound absorbed within the carbon nanotube to revert into platinum particle.