Exploiting Polythiophenyl-Triazine-Based Conjugated Microporous Polymer with Superior Lithium-Storage Performance

Conjugated microporous polymers (CMPs) have been heralded as promising energy-storage materials with advantages such as chemical flexibility, porous structure, and environmentally friendliness. Herein, a novel conjugated microporous polymer was synthesized by integrating triazine, thiophene, and benzothiadiazole into a polymer skeleton, and the Li+-storage performance for the as-synthesized polymer anode in Li-ion batteries (LIBs) was investigated. Benefiting from the inherent large surface area, plentiful redox-active units, and hierarchical porous structure, the polymer anode delivered a high Li+ storage capacity up to 1599 mAh g(-1) at a current rate of 50 mA g(-1) with an excellent rate behavior (363 mAh g(-1) at 5 A g(-1)) and a long-term cyclability of 326 mAh g(-1) over 1500 cycles at 5 A g(-1), implying that the newly developed polymer anode offers a great prospect for next-generation LIBs.