1. Graphene Labs Istituto Italiano di Tecnologia Genova 16163 Italy
2. Electrochemical Innovation Lab Department of Chemical Engineering UCL London WC1E 7JE UK
3. The Faraday Institution Quad One, Becquerel Ave, Harwell Campus Didcot OX11 0RA UK
4. University of Ferrara Department of Chemical Pharmaceutical, and Agricultural Sciences Ferrara 44121 Italy
5. Department of Chemistry UCL London WC1H 0AJ UK
6. HarwellXPS, Research Complex at Harwell Rutherford Appleton Laboratories Didcot OX11 0FA UK
7. National Interuniversity Consortium of Materials Science and Technology (INSTM) University of Ferrara Research Unit University of Ferrara Ferrara 44121 Italy