1. Department of Materials Science and Engineering, University of California, Davis, Davis, California 95616, United States
2. Laboratory of Alternative Energy and Nanomaterials (LEAN), Universidade Federal do ABC, Santo André, SP 09250-790, Brazil
3. Brazilian Nanotechnology National Laboratory (LNNano), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, SP 13083-100, Brazil