Flexible Polyimide Nanorod/Graphene Framework as an Organic Cathode for Rechargeable Sodium-Ion Batteries

Abstract

Organic carbonyl compounds are the promising electrodes for sodium-ion batteries (SIBs), given their sustainable promising and remarkable thermal stability. In this paper, a three-dimensional (3D) structure of polyimide nanorod composites/graphene (PInd@GF) was prepared by using graphene as a conductive framework and PI nanorod as an active material through a simple solvothermal strategy. The as-formed 3D PInd@GF can be directed as a flexible organic cathode for SIBs, which delivered a superior capacity of 101.3 mAh g–1 at 500 mA g–1 after 1000 cycles.