1. Department of Chemistry, Brown University, Providence, Rhode Island 02912, Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439, National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, People’s Republic of China, School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0245, and Fundamental Technology Center, Technology & Development Division, Hitachi Maxell, Ltd., 1-1-88 Ushitora, Ibaraki, Osaka 567...