Abstract
Composite polymer electrolytes based on mixing soft-segment waterborne polyurethane (WPU) and 1-butyl-3-methylimidazolium bis[(trifluoromethyl)sulfonyl]imide (BMImTFSI) have been prepared and characterized. The addition of BMImTFSI results in an increase of the ionic conductivity. At high BMImTFSI concentration (BMImTFSI/WPU = 3 in weight ratio), the ionic conductivity reaches 4.27 × 10-3 S/cm at 30 °C. These composite polymer electrolytes exhibit good thermal and electrochemical stability, which are high enough to be applied in lithium batteries.
Original language | English |
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Pages (from-to) | 519-522 |
Number of pages | 4 |
Journal | Chinese Chemical Letters |
Volume | 20 |
Issue number | 5 |
DOIs | |
Publication status | Published - May 2009 |
Externally published | Yes |
Keywords
- 1-Butyl-3-methylimidazolium bis[(trifluoromethyl)sulfonyl]imide
- Composite polymer electrolytes
- Ionic conductivity
- Ionic liquid
- Waterborne polyurethane