Stu dy of Poi nt of zero charge effect on oxygen re duction reaction at gas diffusionelectrode in PEMF Cs

The point of zero charge (pzc ) is a concept relating to the phenomenon of adsorption, and it describes the condition whe n the electrical charge density o n a surface is zero. In other words, pzc is (usu ally) the pH value at which a s olid subme rged in an electrolyte exhibits zero net electrical charge on the surface[ ۱].A catalyst in fuel c ell is a spe cial material that facilitates the re action of oxygen and hydrogen and is usually m ade of platinum pow der. The catalyst is rough and porous so that the maxim um surface area of the platinum c an be expo sed to the hydrogen o r oxygen[۲].In this work, the effect of pzc on synthesi zing process of platinum and cobalt on carbon electroc atalyst forOxygen reduction reaction(O RR) were investigated. The prepared electroc atalysts ca n be used in low tempe rature fuel cell systems.

کلیدواژه ها:

Point of zero charge ، Electrode pe rformance ، Fuel cell ، Oxygen r eduction reactio n