This second, completely updated edition of a classic textbook provides a concise introduction to the fundamental principles of modern electrochemistry, with an emphasis on applications in energy technology. The renowned and experienced scientist authors present the material in a didactically skilful and lucid manner. They cover the physical - chemical fundamentals as well as such modern methods of investigation as spectroelectrochemistry and mass spectrometry, electrochemical analysis and production methods, as well as fuel cells and micro - and nanotechnology. The result is a must-have for advanced chemistry students as well as those studying chemical engineering, materials science, and physics.