This second edition provides up-to-date information on all aspects of high and low temperature fuel cells, systems, catalysis, and fuel generation. Maintaining its accessible style, the text discusses recent applications in the automotive, stationary power generation, and portable power areas. New topics include component cost development as well as commercial suppliers and systems. Additional chapters cover fuel production and the commercial development of fuel cells for stationary and portable use; the development of a long-term strategy for a hydrogen fuel infrastructure for vehicles; and various safety issues. Each chapter concludes with a list of questions and problems for self-study.