Modified Titanium Bipolar Plates for Fuel Cell Vehicles

Bipolar plate of a proton-exchange membrane fuel cell made up of titanium, titanium alloys or any combination thereof comprising a porous titanium material, titanium alloys or any combination thereof and which is completely covered by a titanium nitride coating. In addition, the present invention relates to two methods of manufacturing said bipolar plate by means of metallurgical techniques, the use of space holders, sintering and gas nitriding. Therefore, the present invention is of interest to the industry dedicated to the manufacture of fuel cells.