Reversible Oxygen Redox Chemistry in Aqueous Zinc‐Ion Batteries
Nankai University · University of Science and Technology of China · +1 more institution
Abstract
Abstract Rechargeable aqueous zinc‐ion batteries (ZIBs) are promising energy‐storage devices owing to their low cost and high safety. However, their energy‐storage mechanisms are complex and not well established. Recent energy‐storage mechanisms of ZIBs usually depend on cationic redox processes. Anionic redox processes have not been observed owing to the limitations of cathodes and electrolytes. Herein, we describe highly reversible aqueous ZIBs based on layered VOPO 4 cathodes and a water‐in‐salt electrolyte. Such batteries display reversible oxygen redox chemistry in a high‐voltage region. The oxygen redox process not only provides about 27 % additional capacity, but also increases the average operating…
Citation impact
- FWCI
- 30.39
- Percentile
- 100%
- References
- 54
Authors
8Topics & keywords
- Redox
- Electrolyte
- Cathode
- Aqueous solution
- Energy storage
- Oxygen evolution
- Materials science
- Oxygen
- Affordable and clean energy