A Novel Aqueous Asymmetric Supercapacitor based on Pyrene-4,5,9,10-Tetraone Functionalized Graphene as the Cathode and Annealed Ti₃C₂T_x MXene as the Anode (Small 25/2023)

Asymmetric Supercapacitors

Pyrene-4,5,9,10-tetraone (PYT) molecules are noncovalently combined with two different types of graphene (GN and LO). The electrochemical performance of the PYT/GN composites is found to be significantly better than the LO-based composites. When matched with an annealed Ti₃C₂T_x MXene anode, the assembled asymmetric device (PYT/GN 4–5//A-Ti₃C₂T_x) delivers an outstanding energy density of 18.4 Wh kg⁻¹ at a power density of 700 W kg⁻¹. More details can be found in article number 2301449 by Xiaoyan Zhang and co-workers.