A Novel High‐Capacity Anode Material Derived from Aromatic Imides for Lithium‐Ion Batteries

Abstract A novel anode material for lithium‐ion batteries derived from aromatic imides with multicarbonyl group conjugated with aromatic core structure is reported, benzophenolne‐3,3′,4,4′‐tetracarboxylimide oligomer (BTO). It could deliver a reversible capacity of 829 mA h g −1 at 42 mA g −1 for 50 cycles with a stable discharge plateaus ranging from 0.05–0.19 V versus Li + /Li. At higher rates of 420 and 840 mA g −1 , it can still exhibit excellent cycling stability with a capacity retention of 88% and 72% after 1000 cycles, delivering capacity of 559 and 224 mA h g −1 . In addition, a rational prediction of the maximum amount of lithium intercalation is proposed and explored its possible lithium storage mechanism.