A Highly Reversible Room-Temperature Sodium Metal Anode
Stanford University · SLAC National Accelerator Laboratory
Abstract
Owing to its low cost and high natural abundance, sodium metal is among the most promising anode materials for energy storage technologies beyond lithium ion batteries. However, room-temperature sodium metal anodes suffer from poor reversibility during long-term plating and stripping, mainly due to formation of nonuniform solid electrolyte interphase as well as dendritic growth of sodium metal. Herein we report for the first time that a simple liquid electrolyte, sodium hexafluorophosphate in glymes (mono-, di-, and tetraglyme), can enable highly reversible and nondendritic plating-stripping of sodium metal anodes at room temperature. High average Coulombic efficiencies of 99.9% were achieved over 300…
Citation impact
- FWCI
- 31.72
- Percentile
- 100%
- References
- 48
Authors
4Topics & keywords
- Anode
- Sodium
- Metal
- Materials science
- Chemistry
- Metallurgy
- Electrode
- Physical chemistry
- Affordable and clean energy