Amorphization and Defect Engineering of Nb₂O₅ within a Graphitic Nanocage Array for Catalytic Polysulfide Conversion in Lithium-Sulfur Batteries

Key Points

• This research aims to improve the performance of lithium-sulfur batteries by addressing the challenges of lithium polysulfide shuttling and redox kinetics.
• Designed an amorphous, oxygen-deficient Nb₂O₅ within a mesoporous graphitic framework.
• Conducted catalytic tests to assess polysulfide conversion efficiency.
• Analyzed the effects of defect engineering on redox kinetics.
• Demonstrated enhanced catalytic activity due to the unique structure of Nb₂O₅.
• Showed improved redox kinetics leading to better battery efficiency.
• Confirmed successful reduction of lithium polysulfide shuttling.