Ultrastable Electrolytic Zn–I 2 Batteries Based on Nanocarbon Wrapped by Highly Efficient Single‐Atom Fe‐NC Iodine Catalysts
State Key Laboratory of Chemical Engineering · Beijing University of Chemical Technology · +5 more institutions
Abstract
Abstract Aqueous Zn–iodine (Zn–I 2 ) conversion batteries with iodine redox chemistry suffers the severe polyiodide shuttling and sluggish redox kinetics, which impede the battery lifespan and rate capability. Herein, an ultrastable Zn–I 2 battery is introduced based on single‐atom Fe–N–C encapsulated high‐surface‐area carbon (HC@FeNC) as the core–shell cathode materials, which accelerate the I − /I 3 − /I° conversion significantly. The robust chemical–physical interaction between polyiodides and Fe–N 4 sites tightly binds the polyiodide ions and suppresses the polyiodide shuttling, thereby significantly enhancing the coulombic efficiency. As a result, the core–shell HC@FeNC cathode endows the electrolytic…
Citation impact
- FWCI
- 20.62
- Percentile
- 100%
- References
- 57
Authors
10- YWYueyang Wang
State Key Laboratory of Chemical Engineering, Beijing University of Chemical Technology
- XJXiangrong Jin
State Key Laboratory of Chemical Engineering, Beijing University of Chemical Technology
- JXJiawei Xiong
University of Georgia
- QZQingyi Zhu
State Key Laboratory of Chemical Engineering, Beijing University of Chemical Technology
- QLQi Li
State Key Laboratory of Chemical Engineering, Beijing University of Chemical Technology
Topics & keywords
- Materials science
- Catalysis
- Iodine
- Electrolyte
- Atom (system on chip)
- Chemical engineering
- Nanotechnology
- Inorganic chemistry