Designing solvate ionogel electrolytes with very high room-temperature conductivity and lithium transference number
Journal Article
·
· Journal of Materials Chemistry. A
- Univ. of Washington, Seattle, WA (United States); University of Washington
- Univ. of Washington, Seattle, WA (United States)
- Univ. of Washington, Seattle, WA (United States); City Univ. of Hong Kong, Kowloon (Hong Kong)
Here, free-standing electrolytes based on Li(G4)TFSI and chemically-crosslinked poly(ethylene glycol), as well as functional co-monomers and/or small amounts of volatile diluent, are demonstrated to reach very high room-temperature ionic conductivities (>2 × 10–3 S cm–1) and electrochemically-measured lithium transference numbers (>0.5). An unexpected dependence of properties on polymer length/crosslinking is observed and explained in terms of competing Li+ transport processes. These electrolytes enable lithium symmetric cells to cycle >600 h at low overpotential and without dendrite growth. Future optimization routes are also discussed.
- Research Organization:
- Univ. of Washington, Seattle, WA (United States)
- Sponsoring Organization:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V)
- Grant/Contract Number:
- EE0007791
- OSTI ID:
- 1491354
- Journal Information:
- Journal of Materials Chemistry. A, Journal Name: Journal of Materials Chemistry. A Journal Issue: 47 Vol. 6; ISSN JMCAET; ISSN 2050-7488
- Publisher:
- Royal Society of ChemistryCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Similar Records
Gel composite electrolyte – an effective way to utilize ceramic fillers in lithium batteries
Composite electrolytes prepared from fumed silica, polyethylene oxide oligomers, and lithium salts
Polycation ionic liquid tailored PEO-based solid polymer electrolytes for high temperature lithium metal batteries
Journal Article
·
2021
· Journal of Materials Chemistry. A
·
OSTI ID:1783046
+6 more
Composite electrolytes prepared from fumed silica, polyethylene oxide oligomers, and lithium salts
Journal Article
·
1997
· Journal of the Electrochemical Society
·
OSTI ID:465083
Polycation ionic liquid tailored PEO-based solid polymer electrolytes for high temperature lithium metal batteries
Journal Article
·
2020
· Energy Storage Materials
·
OSTI ID:1774582
+9 more