1. Nonflammable perfluoropolyether-based electrolytes for lithium batteries.
- Author
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Wong DH, Thelen JL, Fu Y, Devaux D, Pandya AA, Battaglia VS, Balsara NP, and DeSimone JM
- Subjects
- Temperature, Transportation, Electric Power Supplies, Electrolytes chemistry, Ethers chemistry, Fluorocarbons chemistry, Lithium chemistry
- Abstract
The flammability of conventional alkyl carbonate electrolytes hinders the integration of large-scale lithium-ion batteries in transportation and grid storage applications. In this study, we have prepared a unique nonflammable electrolyte composed of low molecular weight perfluoropolyethers and bis(trifluoromethane)sulfonimide lithium salt. These electrolytes exhibit thermal stability beyond 200 °C and a remarkably high transference number of at least 0.91 (more than double that of conventional electrolytes). Li/LiNi1/3Co1/3Mn1/3O2 cells made with this electrolyte show good performance in galvanostatic cycling, confirming their potential as rechargeable lithium batteries with enhanced safety and longevity.
- Published
- 2014
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