Electrochemical area of graphene-supported metal nanoparticles from an atomistic approach

摘要: In electrochemical catalysis, parameters such as current, resistance, or capacitance must be referred to the electrochemically exposed area, otherwise they lack physical sense. For this reason it is necessary know area accurately possible. Although there are several experimental methods estimate these usually not suitable for different metals and present large errors in measurements, example when two more mixed. Moreover, technical difficulties of carrying out type measure mean that often resort approximations with great error, spherical approach, aim having an approximate value area. work, Molecular Dynamics simulations were performed study morphology graphene-supported nanoparticles. A method calculation active surface proposed tested Pt, Au, Pt/Au nanoalloys. These results compared existent data a model supported nanoparticles sizes.