1. Catalonia Institute for Energy Research—IREC Sant Adrià de Besòs Barcelona 08930 Spain
2. Departament d'ElectronicaUniversitat de Barcelona 08028 Barcelona Spain
3. Guangdong Provincial Key Laboratory of Advanced Energy Storage MaterialsSchool of Materials Science and EngineeringSouth China University of Technology Guangzhou 510641 P. R. China
4. SUNWODA-SCUT Joint Laboratory for Advanced Energy Storage TechnologySouth China University of Technology Guangzhou 510641 P. R. China
5. Catalan Institute of Nanoscience and Nanotechnology (ICN2)CSIC and BIST Campus UAB Bellaterra 08193 Barcelona Spain
6. ICREA Pg. Lluís Companys 23 08010 Barcelona Spain
7. Institute of Energy TechnologiesDepartment of Chemical Engineering and Barcelona Research Center in Multiscale Science and EngineeringUniversitat Politècnica de Catalunya, EEBE 08019 Barcelona Spain