A Novel Aqueous Asymmetric Supercapacitor based on Pyrene‐4,5,9,10‐Tetraone Functionalized Graphene as the Cathode and Annealed Ti3C2Tx MXene as the Anode (Small 25/2023)

Abstract

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 Ti3C2Tx MXene anode, the assembled asymmetric device (PYT/GN 4–5//A-Ti3C2Tx) 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.