Topics in Number 51 include: ·         Temperature effects on platinum single-crystal and aqueous solution interphases ·         Surface thermodynamics of the metal and solution interface ·         XAS investigations of PEM fuel cells ·         Palladium-Based electrocatalysts required for alcohol oxidation in direct alcohol fuel cells ·         Structure and Reactivity of transition metal chalcogenides used for molecular oxygen reduction reactions ·         Proton conductivity and electrocatalysis in high temperature PEM fuel cells  From reviews of previous volumes:  “This long-standing series continues its tradition of offering high quality reviews of established and emerging subject areas, together with the less common aspects of electrochemical science... [and]... deserves a place in electrochemistry libraries and should prove useful to electrochemists and related workers.” —Chemistry and Industry  “Continues the valuable service that has been rendered by the Modern Aspects series.” —Journal of Electroanalytical Chemistry  “Will definitely be of much use to researchers in the field of electrochemistry. . . . The editors of this well-produced volume deserve all appreciation for maintaining the excellent standard of the series.” —Bulletin of Electrochemistry  “Extremely well-referenced and very readable.... Maintains the overall high standards of the series.” —Journal of the American Chemical Society.