1. Department of Chemistry and the Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
2. Joint Center for Energy Storage Research, Argonne National Laboratory, Lemont, Illinois 60439, United States
3. Institute of Physical Chemistry and Center for Materials Research, Justus Liebig University Giessen, 35392 Giessen, Germany
4. Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, United States