Nonflammable perfluoropolyether-based electrolytes for lithium batteries.
basic_science · Level V
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- Record sourced from PubMed, PMID 24516123.
- Also identified by DOI 10.1073/pnas.1314615111 and PMC identifier 3948224.
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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.
Medical subject headings
- Electric Power Supplies
- Electrolytes
- Ethers
- Fluorocarbons
- Lithium