1. Chemical Engineering and Materials Science Department, Michigan State University, East Lansing, Michigan 48824, USA
2. Chemistry and Nanoscience Center, National Renewable Energy Laboratory, Golden, Colorado 80401, USA
3. Materials Department, University of California Santa Barbara, Santa Barbara, California 93106, USA
4. Department of Mechanical Engineering and Materials Science, Duke University, Durham, North Carolina 27708, USA
5. Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA
6. Department of Chemistry, Iowa State University, Ames, Iowa 50011, USA
7. Ames Laboratory, US Department of Energy, Ames, Iowa 50011, USA
8. National Institute of Standards and Technology (NIST), Gaithersburg, Maryland 20899, USA
9. Applied Energy Programs, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
10. Materials Science and Engineering, University of Utah, Salt Lake City, Utah 84112, USA
11. Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, USA
12. Department of Physics, Colorado School of Mines, Golden, Colorado 80401, USA