New techniques in preparing electro catalysts and evaluation of their structure and turnover in kinetic of chemical equations

.Developing of leggy platen electro catalysts have been product because of widespread fundamental and practical investigation about electro catalyze (specially for solving kinetic problem in equation of oxygen reduction) and for making joinery of fuel cell with medium temperature like phosphoric acid fuel cells in last of 0691s and early of 0691s. In this paper, kinds of electro catalysts and methods of preparing them were surveyed between preparation methods like 0- methods of making prolific 2- exchange and surface suction of ion 3- methods of sol colloids. Results of surveys showed that spread of electro catalyst on a ductile carbonic bed became to improve situation of three kinds of polarizations (activation and convenience of mass). Decreasing in surplus potential of ohm and mass convenience were shape because of using carbonic past substance and increasing common surface of electrode- electrolyte. This event increase the using of catalyst and reactive. About phosphoric acid fuel cell this event was produce with changing of catalyst that was carrier of active layer. About fuel cells with proton exchange membrane this matter was slightly complication and was produced with changing in frame of ink in response layer that include of catalyst, junction and breakup.

کلیدواژه ها:

Technique ، electro catalysts ، kinetic ، structure