affiliation not provided to SSRN, Colorado School of Mines, National Renewable Energy Laboratory, National Renewable Energy Laboratory, National Renewable Energy Laboratory, Stanford University - Stanford Synchrotron Radiation Lightsource, Stanford University - Stanford Synchrotron Radiation Lightsource, Colorado School of Mines - Department of Metallurgical and Materials Engineering, National Renewable Energy Laboratory and University of California, Berkeley - Lawrence Berkeley National Laboratory (Berkeley Lab)