Xuexue Pan has defended his PhD with honors. The work was entitled „Strategies for designing high performance sodium-ion capacitors”. The defence took place on 9th of November. The promoter was prof. François Béguin and co-promoter was dr Agnieszka Chojnacka. The work was revised by prof. Thierry Brousse – University of Nantes, Institut des Materiaux, dr hab. Andrzej Nowak, prof. PG – Politechnika Gdańska, Wydział Chemiczny and prof. Adam Slabon – Stockholm University, Department of Materials and Environmental Chemistry.