1. Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
2. Department of Chemistry, University of California, Berkeley, California 94720, United States
3. National Laboratory of Solid State Microstructures, School of Electronic Science and Engineering, and Collaborative Innovation Centre of Advanced Microstructures, Nanjing University, Nanjing, 210093, China
4. Department of Materials Science and Engineering, National Chiao Tung University, Hsinchu, 30010, Taiwan
5. Department of Materials Science and Engineering, Northwestern University, 2220 Campus Drive, Evanston, Illinois 60208, United States
6. Institute of New-Energy Materials, School of Materials Science and Engineering, Tianjin University, Tianjin 300350, China
7. The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
8. Gatan Incorporated, Pleasanton, California 94588, United States
9. IBM T. J. Watson Research Center, Yorktown Heights, New York 10598, United States
10. Department of Materials Science and Engineering, University of California, Berkeley, California 94720, United States
11. Kavli Energy NanoScience Institute, University of California—Berkeley and Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States