This biographical dictionary profiles 95 electrochemists from 19 nations who during the past 270 years have researched and developed ever more efficient batteries and energy cells. Each entry traces the subject's origin, education, discoveries and patents, as well as hobbies and family life. The breakthroughs of early innovators are cataloged and the work of living scientists and technicians is brought up to date. An appendix provides a cross-referenced timeline of innovation.