Method for constructing zinc ion hybrid supercapacitor based on eutectic solvent electrolyte
A technology of deep eutectic solvent and supercapacitor, which is applied in hybrid capacitor electrolyte, hybrid/electric double layer capacitor manufacturing, etc., to achieve the effect of price security, avoiding short circuit, and cheap raw materials
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Embodiment 1
[0029] (1) Zinc anode preparation: Polish the commercial zinc sheet (about 2mm) to remove the oxide layer on the surface;
[0030] (2) Preparation of porous carbon cathode: the commercial porous carbon (S BET ≈1900m 2 g -1 ) and the binder are uniformly mixed in a mass ratio of 90:10, and then the mixture is rolled into a thin sheet, and the sheet is pressed into a circular electrode sheet with a diameter of 12mm by a press.
[0031] (3) Preparation of deep eutectic solvent electrolyte: ZnCl 2 Mix evenly with ethylene glycol at a molar ratio of 1:2, heat at 90°C for 2 hours, and cool to room temperature naturally, then follow ZnCl 2 Add 1,2 dichloroethane to the above solution in a molar ratio of 1:6 to 1,2 dichloroethane, stir for 30 minutes to form ZnCl 2 / ethylene glycol / 1,2-dichloroethane deep eutectic solvent electrolyte.
[0032] (4) Zinc-ion hybrid supercapacitors were assembled sequentially by zinc sheets, separators (dropped with deep eutectic solvent electrolyte...
Embodiment 2
[0034] (1) Zinc anode preparation: Polish the commercial zinc sheet (about 2mm) to remove the oxide layer on the surface;
[0035] (2) Preparation of porous carbon cathode: the commercial porous carbon (S BET ≈1900m 2 g -1 ) and the binder are uniformly mixed in a mass ratio of 90:10, and then the mixture is rolled into a thin sheet, and the sheet is pressed into a circular electrode sheet with a diameter of 12mm by a press.
[0036] (3) Preparation of deep eutectic solvent electrolyte: ZnCl 2 Mix well with urea at a molar ratio of 1:3, heat at 100°C for 2 hours, and cool to room temperature naturally, then follow ZnCl 2 Add 1,2 dichloroethane to the above solution in a molar ratio of 1:8 to 1,2 dichloroethane, stir for 30 minutes to form ZnCl 2 / urea / 1,2-dichloroethane deep eutectic solvent electrolyte.
[0037] (4) Zinc-ion hybrid supercapacitors were assembled sequentially by zinc sheets, separators (dropped with deep eutectic solvent electrolyte), and porous carbon ca...
Embodiment 3
[0039] (1) Zinc anode preparation: Polish the commercial zinc sheet (about 2mm) to remove the oxide layer on the surface;
[0040] (2) Preparation of porous carbon cathode: the commercial porous carbon (S BET ≈1900m 2 g -1 ) and the binder are uniformly mixed in a mass ratio of 90:10, and then the mixture is rolled into a thin sheet, and the sheet is pressed into a circular electrode sheet with a diameter of 12mm by a press.
[0041] (3) Preparation of deep eutectic solvent electrolyte: ZnCl 2 Mix evenly with acetamide at a molar ratio of 1:5, heat at 110°C for 4 hours, and cool to room temperature naturally, then follow ZnCl 2 Add dimethyl carbonate to the above solution in a molar ratio of 1:10 to dimethyl carbonate, stir for 30min to form ZnCl 2 / acetamide / dimethyl carbonate deep eutectic solvent electrolyte.
[0042] (4) Zinc-ion hybrid supercapacitors were assembled sequentially by zinc sheets, separators (dropped with deep eutectic solvent electrolyte), and porous c...
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