1. Laboratory of Materials for Renewable Energy (LMER), Institute of Chemical Sciences and Engineering (ISIC), Basic Science Faculty (SB), École polytechnique fédérale de Lausanne (EPFL), Rue de l’Industrie 17, CP 440, Valais/Wallis, Energypolis, CH-1951 Sion, Switzerland
2. Empa Materials Science & Technology, CH-8600 Dübendorf, Switzerland
3. Interdisciplinary Centre for Electron Microscopy (CIME), École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
4. Dipartimento di Energia, Politecnico Di Milano, via Lambruschini 4, Milano 20156, Italy