For citation:
Fedorov N. A., Uvarov N. F., Ulihin A. S. Preparation of polymer electrolytes based on polyurethane elastomer by the swelling method. Electrochemical Energetics, 2024, vol. 24, iss. 4, pp. 191-195. DOI: 10.18500/1608-4039-2024-24-4-191-195, EDN: QEQOVI
Preparation of polymer electrolytes based on polyurethane elastomer by the swelling method
The search for solvents to prepare polymer electrolytes based on polyurethane elastomer by swelling method was carried out. The greatest swelling was observed in N-methyl-2-pyrrolidone, and the maximum degree of swelling was reached in 24 hours at 25°C. The swelling effect decreased with increasing the salt concentration. The ionic conductivity of the polymer electrolytes reached the maximum of 6–8·10-4 S/cm at 5 wt% of lithium salt. Using the method of galvanostatic cycling it was shown that the electrolyte was reversible by lithium ions and electrochemically stable in the voltage range up to 4.8 V
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