Book excerpt: This book is a welcome response to the general concerns for the generation and conservation of energy in the future. It gives a comprehensive overview of both the fundamental and applied aspects of solid polymer electrolytes. Topics discussed include: * Polymer Electrolyte-based Devices * Homopolymer Hosts * The Interaction between Polymer and Salt * Conductivity in Polymer Electrolytes * Polymer Electrolyte Architecture * Transport Properties Effects of Dynamic Disorder * The Electrode-Electrolyte Interface Newcomers and experts alike will greatly benefit from the lucid and objective analysis this book provides.