With contributions from leading researchers in their fields, this book provides an overview of the most important electrochemical power sources in development today. Focusing on materials, design, and performance, the text presents the most recent and innovative technologies employed in battery and fuel cell technologies. Topics include acid-alkaline batteries, microbial fuel cells, lithium batteries, lead acid batteries, ultracapacitors, vanadium flow batteries, and carbon dioxide electroreduction. The book discusses the advantages of these cells over conventional methodologies, and their future applications.