ELECTROLYTE SOLUTE, ELECTROLYTE, AND HIGH-VOLTAGE SUPERCAPACITOR
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Abstract
The present invention relates to the electrochemical field, particularly to an electrolyte solute and an electrolyte that are used for a high-voltage supercapacitor, and a high-voltage supercapacitor using the electrolyte. The anion of the electrolyte solute may be one or more selected from tetrafluoroborate, hexafluorophosphate, bis(trifluoromethylsulfonyl) imide, tris (trifluoromethylsulfonyl) methyl and perfluoroalkyl sulfonate, and the cation may be N-methyl-1,4-diazabicyclo[2.2.2]octane ammonium, N,N-dimethyl-1,4-diazabicyclo[2.2.2]octane ammonium, N-methyl-1-azabicyclo[2.2.2] octane ammonium. The high-voltage supercapacitor fabricated by using the electrolyte formulated by the electrolyte solute of the present invention can work stably for a long period of time at a voltage of 2.7 V to 3.2 V, the energy density is greatly increased, the property of high power density is maintained, and the working life is prolonged.
2 Citations
19 Claims
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1-6. -6. (canceled)
- 7. An electrolyte, used for a high-voltage supercapacitor, comprising a solvent and a solute, wherein the solute comprises A, the A is one or more of substances having a chemical structural formula of a structural formula 1, a structural formula 2, and a structural formula 3 below:
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10. A high-voltage supercapacitor, comprising an electrolyte and an electricity core immersed in the electrolyte, wherein the electricity core comprises two collector electrodes and a membrane disposed in the middle of the two collector electrodes, activated carbon is adhered on the two collector electrodes, the electrolyte solute comprises A, the A is one or more of substances having a chemical structural formula of the structural formula 1, the structural formula 2, and the structural formula 3, wherein R, R1, R2, R3 and R4 are respectively a hydrocarbyl group containing 1 to 5 carbon atoms, −
- A is an anion, n and m are the number of substituents on the ring, n is an integer of 0 to 6, and m is an integer of 0 to 7.
- View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
Specification