Method for preparing MnO2-carbon cloth composite flexible electrode material with high specific capacitance
A technology of high specific capacitance and flexible electrodes, which is applied in the manufacture of hybrid capacitor electrodes, hybrid/electric double layer capacitors, etc., can solve the problems of difficult control of the reaction process, and achieve simple preparation process, easy control of reaction conditions, and high density Effect
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example 1
[0039] First, Taiwan CeTech carbon cloth was placed in a mixed solution of deionized water and ethanol (volume ratio 1:1), treated in a water bath at 70°C for 8h, and then dried in an oven at 60°C for 2h. Then it is subjected to liquid-phase oxidation treatment, soaking it in a mixed acid (HNO 3 with H 2 SO 4 According to the volume ratio of 1:1) in the aqueous solution, after being treated in a water bath at 70°C for 8 hours, take it out and place it in an oven under the same conditions for drying.
[0040] Secondly, the carbon cloth after hydrophilic treatment was cut into a rectangular spline of 1.5cm×1cm, and the working electrode was clamped with a Pt sheet electrode clamp (to ensure that the area of the electrode material was 1cm 2 ), fixed in the electrolytic cell (all the other examples are treated in the same way). MnO was prepared on carbon cloth by potentiostatic electrochemical deposition 2 / carbon cloth flexible composite electrode.
[0041] fixed in the e...
example 2
[0043] First, the PAN-based carbon fiber cloth was placed in a mixed solution of deionized water and ethanol (volume ratio: 1:2), treated in a water bath at 80 °C for 10 h, and then dried in an oven at 70 °C for 3 h. Then it is subjected to liquid-phase oxidation treatment, soaking it in a mixed acid (HNO 3 with H 2 SO 4 According to the volume ratio of 2:1) in the aqueous solution, after 80 ℃, 10h water bath treatment, take it out and place it in the oven under the same conditions for drying.
[0044] Secondly, the hydrophilic treated carbon cloth was fixed in the electrolytic cell. MnO was prepared on carbon cloth by potentiostatic electrochemical deposition 2 / carbon cloth flexible composite electrode. Prepare a precursor solution of 0.01mol / L, weigh 0.3579g of Mn(NO 3 ) 2 Dissolve in 200mL deionized water and stir magnetically for 10min at 200r / min. Using a three-electrode system, pour the precursor solution into the electrolytic cell. Ag / AgCl is the reference elec...
example 3
[0046] First, the graphitized carbon fiber cloth was placed in a mixed solution of deionized water and ethanol (volume ratio: 1:3), treated in a water bath at 90 °C for 11 h, and then dried in an oven at 80 °C for 4 h after taking it out. Then it was subjected to liquid-phase oxidation treatment, soaking it in a mixed acid (HNO 3 with H 2 SO 4 According to the volume ratio of 3:1) in the aqueous solution, after 11 hours of water bath treatment at 90 ° C, take it out and place it in an oven under the same conditions for drying.
[0047] Secondly, the hydrophilic treated carbon cloth was fixed in the electrolytic cell. MnO was prepared on carbon cloth by potentiostatic electrochemical deposition 2 / carbon cloth flexible composite electrode. To prepare a precursor solution of 0.05mol / L, weigh 1.259g of MnCl 2 Dissolve in 200mL deionized water and stir magnetically for 30min at 200r / min. Using a three-electrode system, pour the precursor solution into the electrolytic cell....
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