JOHN NEWMAN, PhD, has been a professor of chemical engineering at the University of California, Berkeley, since 1963. Known worldwide for his seminal papers in the mathematical analysis of electrochemical problems, both analytic and numerical, he is a member of the National Academy of Engineering and the recipient of several awards from the Electrochemical Society. He is the former associate editor for the Journal of the Electrochemical Society and current Director of the U. S. Department of Energy's Batteries for Advanced Transportation Technologies program.

KAREN E. THOMAS-ALYEA received her PhD in chemical engineering from the University of California, Berkeley, in 2002. Her work has involved modeling of batteries and fuel cells.