Nanoconfinement-cooperated catalysis enables rapid tandem redox kinetics for wide-temperature lithium-sulfur batteries.

Nanoconfinement-cooperated catalysis significantly enhances lithium-ion kinetics, achieving a Li+ transference number of 0.77 and cycling stability over 1000 cycles in Li-S batteries.

• Why it matters: Improving the slow redox kinetics caused by high energy barriers of Li+ desolvation is crucial for advancing high-performance lithium-sulfur batteries.
• What they did: A porous covalent organic framework (TPBD) decorated MXene was constructed to regulate Li+ dynamics through electrochemical tandem catalysis and spatial nanoconfinement, supported by theoretical simulations and in situ Raman analysis.
• The result: This approach enables long-term cycling, high areal capacity (>6 mAh cm-2) at 0°C, excellent rate capability at 50°C, and stable pouch cell operation over 100 cycles, promoting tandem redox kinetics under wide-temperature conditions.