Polythiophene coated aromatic polyimide enabled ultrafast and sustainable lithium ion batteries

Organic composite electrode materials based on aromatic polyimide (PI) and electron conductive polythiophene (PT) have been prepared by a facile in situ chemical oxidation polymerization method. The optimized composite electrode PI30PT delivers a remarkable high-rate cyclability, achieving a high capacity of 89.6 mA h g⁻¹ at 20 C with capacity retention of 94% after 1000 cycles.