1. Department of Chemical Engineering, University of California, Berkeley, California 94720, Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, Department of Chemistry, University of California, Berkeley, California 94720, Physical Biosciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, Stanford Synchrotron Radiation Laboratory, SLAC, P O Box 4349, Stanford, California 94309, and Environmental Energy and Technologies Division,...