Overview of Systems. System-level Constraints on Fuel Cell Materials and Electrocatalysts / Elliot Padgett, Dimitrios Papageorgopoulos -- PEM Fuel Cell Design from the Atom to the Automobile / Andrew Haug, Michael Yandrasits -- Basics - Fundamentals. Electrochemical Fundamentals / Vito Di Noto, Gioele Pagot, Keti Vezzù, Enrico Negro, Paolo Sgarbossa -- Quantifying the Kinetic Parameters of Fuel Cell Reactions / Viktoriia A Saveleva, Juan Herranz, Thomas J Schmidt -- Adverse and Beneficial Functions of Surface Layers Formed on Fuel Cell Electrocatalysts / Shimshon Gottesfeld -- State of the Art. Design of PGM -free ORR Catalysts: From Molecular to the State of the Art / Naomi Levy, Lior Elbaz -- Recent Advances in Electrocatalysts for Hydrogen Oxidation Reaction in Alkaline Electrolytes / Indra N Pulidindi, Meital Shviro -- Membranes for Fuel Cells / Paolo Sgarbossa, Giovanni Crivellaro, Francesco Lanero, Gioele Pagot, Afaaf R Alvi, Enrico Negro, Keti Vezzù, Vito Di Noto -- Supports for Oxygen Reduction Catalysts: Understanding and Improving Structure, Stability, and Activity / Iwona A Rutkowska, Sylwia Zoladek, Pawel J Kulesza -- Physical-Chemical Characterization. Understanding the Electrocatalytic Reaction in the Fuel Cell by Tracking the Dynamics of the Catalyst by X -ray Absorption Spectroscopy / Ditty Dixon, Aiswarya Bhaskar, Aswathi Thottungal -- Modeling. Unraveling Local Electrocatalytic Conditions with Theory and Computation / Jun Huang, Mohammad J Eslamibidgoli, Michael H Eikerling -- Protocols. Quantifying the Activity of Electrocatalysts / Karla Vega-Granados, Nicolas Alonso-Vante -- Durability of Fuel Cell Electrocatalysts and Methods for Performance Assessment / Bianca M Ceballos, Piotr Zelenay -- Systems. Modeling of Polymer Electrolyte Membrane Fuel Cells / Andrea Baricci, Andrea Casalegno, Dario Maggiolo, Federico Moro, Matteo Zago, Massimo Guarnieri -- Physics-based Modeling of Polymer Electrolyte Membrane Fuel Cells: From Cell to Automotive Systems / Andrea Baricci, Matteo Zago, Simone Buso, Marco Sorrentino, Andrea Casalegno.