As world demand for electrical energy increases, it will be the ingenuity and skill of brilliant electrochemists that enables us to utilize the planet’s mineral reserves responsibly. This biographical dictionary profiles 85 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.