All‐Round Ionic Liquids for Shuttle‐Free Zinc‐Iodine Battery
Nanyang Technological University · Jiaxing University · +2 more institutions
Abstract
Abstract The practical implementation of aqueous zinc‐iodine batteries (ZIBs) is hindered by the rampant Zn dendrites growth, parasite corrosion, and polyiodide shuttling. In this work, ionic liquid EMIM[OAc] is employed as an all‐round solution to mitigate challenges on both the Zn anode and the iodine cathode side. First, the EMIM + embedded lean‐water inner Helmholtz plane (IHP) and inert solvation sheath modulated by OAc − effectively repels H 2 O molecules away from the Zn anode surface. The preferential adsorption of EMIM + on Zn metal facilitates uniform Zn nucleation via a steric hindrance effect. Second, EMIM + can reduce the polyiodide shuttling by hindering the iodine dissolution and forming an EMIM…
Citation impact
- FWCI
- 34.59
- Percentile
- 100%
- References
- 70
Authors
7Topics & keywords
- Ionic liquid
- Nucleation
- Materials science
- Steric effects
- Dissolution
- Anode
- Phase (matter)
- Adsorption