Future tasks in interfacial electrochemistry and surface reactivity

Interfacial electrochemistry is a main part of Physical Electrochemistry, which is developing in several directions. In this respect, this note will reflect my personal views in the “to do” list of topics related to well-defined interfacial electrochemistry and its application to the understanding of electrocatalytic reactivity, deliberately limited to single-crystal platinum model electrodes in water electrolyte solutions. Several points are related to ongoing research and others have been suggested in meetings. Because of that, the text has a taste of déjà vu. References are a limited selection of examples for the interested readers.Financial support from MICINN-FEDER (project CTQ2016-76221-P) is greatly acknowledged