Electrochemical SystemsJohn Newman, PhD, has been a Professor of Chemical Engineering at the University of California, Berkeley, since 1963, is a member of the National Academy of Engineering, and the recipient of several awards from The Electrochemical Society. Nitash P. Balsara, PhD, holds the Charles W. Tobias Chair in Electrochemistry at the Department of Chemical and Biomolecular Engineering, University of California, Berkeley, where he has been a professor since 2000.