Preparation method for core composite carbon electrode material of double-electric-layer capacitor
A technology of electric double layer capacitors and electrode materials, which is applied in the preparation of electrode materials and the preparation of sandwich composite carbon electrode materials, can solve the problems of large van der Waals force and loss of specific surface area, and achieve high rate performance, low internal resistance, abundant The effect of the pore structure
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Embodiment 1
[0036] The particle diameter is 5μm, the specific surface area is 2500m 2 Activated carbon per gram was dispersed in an aqueous solution with a SDBS concentration of 1%, and dispersed by ultrasonic to obtain a uniform activated carbon suspension with a concentration of 10 g / mL. At the same time, the size is 10μm, the specific surface area is 1500m 2 / g of graphene oxide was dispersed in deionized water to obtain a graphene oxide suspension with a concentration of 10 g / mL. Then, the activated carbon suspension and the graphene oxide suspension are mixed to obtain a mixed suspension, and the mass ratio of the activated carbon to the graphene oxide in the mixed suspension is 1.5:1. The mixed suspension was stirred for 3 hours, so that the graphene oxide and activated carbon were fully mixed, and the two were interlaced to form a sandwich composite structure. Then filter, wash with deionized water for 5 times, and dry at 80° C. for 24 hours to obtain a composite of activated car...
Embodiment 2
[0038] The particle diameter is 4μm, the specific surface area is 2000m 2 Activated carbon per gram was dispersed in an aqueous solution with a SDBS concentration of 1%, and dispersed by ultrasonic to obtain a uniform activated carbon suspension with a concentration of 10 g / mL. At the same time, the size is 10μm, the specific surface area is 1500m 2 / g of graphene oxide was dispersed in deionized water to obtain a graphene oxide suspension with a concentration of 10 g / mL. Then, the activated carbon suspension and the graphene oxide suspension are mixed to obtain a mixed suspension, and the mass ratio of the activated carbon to the graphene oxide in the mixed suspension is 3:1. The mixed suspension was stirred for 3 hours, so that the graphene oxide and activated carbon were fully mixed, and the two were interlaced to form a sandwich composite structure. Then filter, wash with deionized water for 5 times, and dry at 80° C. for 24 hours to obtain a composite of activated carbon...
Embodiment 3
[0040] The particle diameter is 3μm, the specific surface area is 1800m 2 Activated carbon per gram was dispersed in an aqueous solution with a SDBS concentration of 1%, and dispersed by ultrasonic to obtain a uniform activated carbon suspension with a concentration of 10 g / mL. At the same time, the size is 10μm, the specific surface area is 1500m 2 / g of graphene oxide was dispersed in deionized water to obtain a graphene oxide suspension with a concentration of 10 g / mL. Then, the activated carbon suspension and the graphene oxide suspension are mixed to obtain a mixed suspension, and the mass ratio of the activated carbon to the graphene oxide in the mixed suspension is 5:1. The mixed suspension was stirred for 3 hours, so that the graphene oxide and activated carbon were fully mixed, and the two were interlaced to form a sandwich composite structure. Then filter, wash with deionized water for 5 times, and dry at 80° C. for 24 hours to obtain a composite of activated carbo...
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