FIELD: chemistry.
SUBSTANCE: invention relates to a supercapacitor electrolyte, which includes N-methyl-N-n-propyl-pyrrolidinium tetrafluoroborate salt and sulfolane, with the following ratio of said components, wt %: N-methyl-N-n-propyl-pyrrolidinium tetrafluoroborate salt - 20-80; sulfolane - 80-20.
EFFECT: disclosed electrolyte has a melting point lower than room temperature and high conductivity in the entire temperature range of stability of the liquid phase while maintaining heat resistance, electrochemical stability and low cost.
1 tbl, 4 dwg
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