Abstract
Peryleneimide and its derivatives have excellent thermal and chemical stability and have been extensively studied as cathode materials for lithium-ion batteries. In this paper, an isophthalic acid-functionalized peryleneimide (PI-COOH) anode active material is provided, the capacity storage mechanisms of PI-COOH electrodes are explored, and the cycling performance and rate capability of PI-COOH/Li batteries are investigated. In the total capacity storage of the PI-COOH electrode, the diffusion process provides about 69%. The PI-COOH electrode exhibits good cycling stability and rate capability, with a specific capacity of 580 mAh g−1 after 100 cycles at a current density of 50 mA g−1 and a specific capacity of 286.6 mAh g−1 after 1000 cycles at a current density of 1000 mA g−1. The results suggest that PI-COOH is a potential anode material for Li-ion batteries.
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