1. Chemistry Institute, State University of Campinas, 13083-970 Campinas, São Paulo, Brazil
2. Center for Innovation on New Energies, University of Campinas, 13083-841 Campinas, São Paulo, Brazil
3. Brazilian Synchrotron Light Laboratory, Brazilian Center for Research in Energy and Materials, 13083-970, Campinas, São Paulo, Brazil
4. Department of Mechanical and Industrial Engineering, University of Illinois, Chicago, Illinois 60607, United States
5. Center for Nanoscale Materials, Argonne National Laboratory, Argonne, Illinois 60439, United States
6. Institute of Electrochemistry, University of Alicante, Apartado 99, E-03080 Alicante, Spain