Dual‐Defect Engineering of Bidirectional Catalyst for High‐Performing Lithium‐Sulfur Batteries (Small 40/2023)

Lithium-Sulfur Batteries In article number 2301545, Hao Sun, Shaochun Tang, and co-workers report a novel dual-defect catalyst comprised of Co-doped FeP with P vacancies on MXene (CoD-FePv@MXene), which serves as both deposition regulator and redox accelerator for Li2S electrochemistry. The P vacancies deliver more LiPSs adsorption/active sites for accelerating Li2S nucleation, and the Co doping produces local electric field to reduce reaction energy barrier for promoting Li2S dissolution.