Local Composition of Alloy Catalysts for Oxygen Reduction by STEM-EDS. (August 2014) - Deiana, D.; Verdaguer-Casadevall, A.; Hernandez Fernandez, P.; Masini, F.; Strebel, C.; McCarthy, D.N.; Nierhoff, A.; Nielsen, J.H.; Stephens, I.E.L.; Chorkendorff, I.; Wagner, J.B.; Hansen, T.W.