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