1. Department of Chemical Engineering, Columbia Electrochemical Engineering Center, Lenfest Center for Sustainable Energy Columbia University in the City of New York, New York, NY 10027, USA
2. Department of Chemistry, University of California, Irvine, California 92697, USA
3. Irvine Materials Research Institute (IMRI), University of California, Irvine, 92697, USA
4. Materials Science Division, Lawrence Livermore National Laboratory, Livermore, California 94550, USA
5. Department of Materials Science and Engineering, University of California, Irvine, California 92697, USA
6. Department of Physics and Astronomy, University of California, Irvine, California 92697, USA
7. Energy Conversion and Storage Systems Center National Renewable Energy Laboratory, Golden, CO 80401, USA
8. Department of Chemistry and Biomolecular Engineering, University of California, Irvine, California 92697, USA