In this Industrial PhD the use of ultrathin carbon sheets, called graphene, as additives in rechargeable battery electrodes was investigated. The project was bridging industry and academia a collaboration on applied chemistry between Danish Graphene and Aarhus University. Application of graphene materials in both Li-ion batteries and Na-ion batteries have been studied in two concurrently projects. In Li-ion batteries the graphene materials were used as an additive in a cobalt-free positive electrode resulting in increased lifetime. In Na-ion batteries the graphene materials were used in a composite with red phosphorus to make a negative electrode with ultra-high capacity.  

The PhD degree was completed at the Department of Chemistry, Faculty of Natural Sciences, Aarhus University.

This summary was prepared by the PhD student.

Time: Thursday 27^th of November 2025 at 10.15
Place: Building1632, Room 201, Auditorie (170), Høegh-Guldbergs Gade 6B, 8000 Aarhus C
Title of dissertation: Graphene Additives in Rechargeable Batteries
Contact information: Marie Uth, e-mail: uth@chem.au.dk
Members of the assessment committee:
Professor Erik Berg, Department of Chemistry Ångström Laboratory, Uppsala University, Sweeden
Professor Donghong Yu, Institute of Chemistry and Bioscience, Aalborg University, Denmark
Professor Henrik Stapelfeldt (chair), Department of Chemistry, Aarhus University, Denmark
Main supervisor: Kim Daasbjerg, Department of Chemistry, Aarhus University
Co-supervisor: Professor Dorthe Ravnsbæk, Department of Chemistry, Aarhus University
Language: The PhD dissertation will be defended in English