Enhanced oxygen reduction activity of platinum subnanocluster catalysts through charge redistribution

Single-size platinum Pt 6 subnanoclusters exhibit superior mass-specific and surface-specific activities for the oxygen reduction reaction. The enhanced activity is attributed to polarized electron distributions based on rigorous structure characterization by X-ray absorption fine structure spectroscopy and density functional theory. Single-size platinum Pt 6 subnanoclusters exhibit superior mass-specific and surface-specific activities for the oxygen reduction reaction.