Multistage self‐assembly engineered mesoporous conjugated polymer with isomeric nanoarchitecture towards superior performance Li-S batteries

Although mesoporous materials have been dramatically developed over past decades, which still suffer from the few types of materials available. Meanwhile, the previous approaches only involve direct co-assembly between monomer and micelle, which always give rise to the homogeneous, isotropic and limited nanoarchitectures. Herein, we report an unprecedented mesoporous conjugated fiber with isomeric core-shell nanoarchitecture by supramolecular interaction-driving multistage self-assembly. Theoretical modeling and extensively experimental investigations revealed the π-conjugated donors in the mesoporous fiber behaving as “electron reservoir” could efficiently immobilize and catalyze polysulfides conversion. The novel conjugated fibers featuring abundant functional groups, ordered mesoporous nanoarchitecture and enhanced electronic properties. Benefiting from these advantages, the mesoporous conjugated fibers as functions interlayer towards Li-S batteries rendered admirable long-cycle stability with a highly stable capacity of 945 mAh g⁻¹ after 200 cycles at 0.2 C.