Опубликована: Янв. 1, 2023

Combining highly conductive carbon materials with high specific capacity redox-active is an effective approach to achieving energy density in aqueous supercapacitors (SCs). However, the weak interfacial bonding between organic and results poor cycling stability low capacity. In this work, positive negative for asymmetric (ASCs) are prepared by a simple sequential two-step reaction. The graphene oxide p-phenylenediamine recombined amide bonds first step used as electrode material. And then, graphene/ poly(naphthylimide) in-situ polymerization of naphthalimide on p-phenylenediamine-grafted surface interface contact promoted covalent bonding, which facilitating charge transport bring ASCs. This ASCs device can deliver 27.3 Wh kg-1 at 750 W kg-1, indicating remarkable stability, capacitance retention rate 84.5% after 15,000 cycles. work provides valuable insights into production density.

Язык: Английский