1. Energy Storage & Distributed Resources Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
2. Department of Materials Science and Engineering, University of California Berkeley, Berkeley, CA 94720, USA
3. National Center for Electron Microscopy, Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
4. Department of Chemical and Biomolecular Engineering, University of California Berkeley, Berkeley, CA, 94720, USA