For citation:
Yudina A. V., Ignatova A. A., Shuvalova N. I., Martynenko V. M., Yarmolenko O. V. Influence of additives of EMIBF4 and BMIBF4 ionic liquids on the properties of network polymer electrolytes for lithium power sources. Electrochemical Energetics, 2014, vol. 14, iss. 3, pp. 158-163. DOI: 10.18500/1608-4039-2014-14-3-158-163, EDN: TQCJPX
Influence of additives of EMIBF4 and BMIBF4 ionic liquids on the properties of network polymer electrolytes for lithium power sources
The effect of 1-ethyl-3-methylimidazolium tetrafluoroborate (EMIBF4) and 1-butyl-3-methylimidazolium tetrafluoroborate (BMIBF4) ionic liquids on the properties of the polymer electrolyte based on polyethylene glycol diacrylate (PEG-DA) and LiBF4 salt was studied. Research was carried out by spray-mass spectroscopy, differential scanning calorimetry, and electrochemical impedance spectroscopy technique in the temperature range from -40 to 120 °C. The best polymer electrolyte composition is the ratio of PEG-DA: LiBF4: EMIBF4 = 1: 1: 6.5 mole with a conductivity of 2.55\cdot 10-3 S/cm at 20 °C, 2.20\cdot 10-4 S/cm at -40 °C and the glass transition temperature -103 °C.
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