Brennstoffzelle mit Elektrolyten aus Phosphorsäure

摘要

A series of modified phosphoric acid electrolytes containing fluorinated carbon compounds and silicone fluids as additives are disclosed. The modified electrolytes can improve the fuel cell performance due to the enhanced oxygen reduction kinetics. These additives are, preferably, potassium perfluorohexanesulphonate (C6F13KO3S), potassium nonafluorobutanesulphonate (C4F9KO3S), perfluorotributylamine [(C4F9)3N] and polymethylsiloxanes [(-Si(CH3)2O-)n]. The additives are added in an amount of 0.1-5 wt% with respect to the phosphoric acid electrolyte.