“Water‐in‐Salt” Electrolyte Makes Aqueous Sodium‐Ion Battery Safe, Green, and Long‐Lasting
University of Maryland, College Park · DEVCOM Army Research Laboratory · +3 more institutions
Abstract
Abstract Narrow electrochemical stability window (1.23 V) of aqueous electrolytes is always considered the key obstacle preventing aqueous sodium‐ion chemistry of practical energy density and cycle life. The sodium‐ion water‐in‐salt electrolyte (NaWiSE) eliminates this barrier by offering a 2.5 V window through suppressing hydrogen evolution on anode with the formation of a Na + ‐conducting solid‐electrolyte interphase (SEI) and reducing the overall electrochemical activity of water on cathode. A full aqueous Na‐ion battery constructed on Na 0.66 [Mn 0.66 Ti 0.34 ]O 2 as cathode and NaTi 2 (PO 4 ) 3 as anode exhibits superior performance at both low and high rates, as exemplified by extraordinarily high…
Citation impact
- FWCI
- 32.15
- Percentile
- 100%
- References
- 39
Authors
14- LSLiumin Suo
University of Maryland, College Park
- OBOleg Borodin
DEVCOM Army Research Laboratory
- YWYuesheng Wang
Beijing National Laboratory for Molecular Sciences, Institute of Physics, University of Chinese Academy of Sciences
- XRXiaohui Rong
Beijing National Laboratory for Molecular Sciences, Institute of Physics, University of Chinese Academy of Sciences
- WSWei Sun
University of Maryland, College Park
Topics & keywords
- Electrolyte
- Electrochemistry
- Faraday efficiency
- Aqueous solution
- Anode
- Materials science
- Cathode
- Battery (electricity)
- Affordable and clean energy