Related Experiment Video
Updated: May 26, 2026
Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques
Published on: November 11, 2013
Amorphization and defect engineering of Nb2O5 within a graphitic nanocage array for catalytic polysulfide conversion
Yifan Gao1, Hao Wang2, Dong Yang1
1State Key Laboratory of Molecule Engineering of Polymers and Department of Macromolecular Science, Fudan University, Shanghai 200438, China.
None:
Lithium-sulfur batteries (LSBs) are limited by lithium polysulfide (LiPS) shuttling and sluggish redox kinetics. To address this challenge, we design an amorphous, oxygen-deficient Nb2O5 embedded in a mesoporous graphitic framework (Nb2O5@MGF) as a multifunctional interlayer that strongly traps and catalytically converts LiPS. The Nb2O5@MGF uniformizes the sulfur distribution, exposes vast active interfaces, and offers a reduced ion/electron transportation pathway for expedited redox reaction. Moreover, the amorphous Nb2O5 manipulates LiPS chemical affinity, while oxygen vacancies improve catalytic activity. Consequently, the Nb2O5@MGF-equipped cell exhibits high capacity and stable cycling. This work presents a synergistic crystallinity and defect-engineering strategy for practical LSBs.
