All-solid-state interpenetrating network polymer electrolytes for long cycle life of lithium metal batteries
Journal Article
·
· Journal of Materials Chemistry. A
- Nanchang Hangkong Univ., Nanchang (China). School of Environmental and Chemical Engineering; Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Chemical Science Division
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Chemical Science Division
- Nanchang Hangkong Univ., Nanchang (China). School of Environmental and Chemical Engineering
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Chemical Science Division; Univ. of Tennessee, Knoxville, TN (United States). Dept. of Chemistry
A star-shape polymer of 3-armed poly(ethylene glycol) methyl ether methacrylate-co-glycidyl methacrylate copolymer (3PPEGM-co-GMA) was synthesized using an atom transfer radical polymerization (ATRP) technique. All-solid-state interpenetrating network polymer electrolytes (INSPEs) were fabricated by simultaneous reaction of 3PPEGM-co-GMA and bisphenol A diglycidyl ether (BPDE) with polyetherdiamine (ED2003) in the presence of lithium bis(trifluoromethane) sulfonamide (LiTFSI). The INSPEs exhibited ionic conductivities higher than 10-5 S cm-1 at room temperature, a high oxidation stability of 4.5 vs. Li/Li+ and remarkable stability towards lithium metal. Li metal batteries with LiFePO4 as the cathode and INSPEs as the electrolyte cycled at a current rate of 0.1C at 60 °C showed a high initial discharge capacity of 156.2 mA h g-1 and a stable cycling performance over 200 cycles with a high coulombic efficiency of 99%. In conclusion, the results demonstrate that the interpenetrating network polymer electrolytes are promising electrolytes for next generation lithium-based batteries with high ionic conductivity, improved safety, and stable electrochemical performance.
- Research Organization:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
- Grant/Contract Number:
- AC05-00OR22725
- OSTI ID:
- 1462867
- Alternate ID(s):
- OSTI ID: 1460879
- Journal Information:
- Journal of Materials Chemistry. A, Journal Name: Journal of Materials Chemistry. A Journal Issue: 30 Vol. 6; ISSN JMCAET; ISSN 2050-7488
- Publisher:
- Royal Society of ChemistryCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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