A kind of 3d petal-shaped graphene-polyaniline supercapacitor electrode material and preparation method thereof
A technology for supercapacitors and electrode materials, which is applied in the manufacture of hybrid capacitor electrodes and hybrid/electric double layer capacitors, etc. It can solve the problems of graphene sheet swinging and slipping, high inertia, etc., and achieves simple methods, low cost and high yield high effect
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Embodiment 1
[0036] The preparation of graphene oxide (GO): Add 3g graphite powder and 1.5g sodium nitrate in a 500mL three-necked bottle, slowly add 69mL98% H 2 SO 4 . Afterwards, under vigorous stirring, 9 g of KMnO was gradually added 4 , and keep the temperature below 20°C. The mixture was stirred at 35°C for 30min, then slowly added 138mL deionized water, the temperature was controlled below 100°C, after 15min, a large amount of deionized water and 30% H 2 o 2 Solution 15mL. The resulting graphene oxide suspension was filtered through 0.22 μm polytetrafluoroethylene (PTFE) and washed repeatedly with 1M HCl and deionized water to remove excess metal ions until the filtrate was neutral, and the product was frozen under reduced pressure After drying for 48 hours, graphene oxide (GO) was obtained.
[0037] Preparation of aminotriazine covalent bond functionalized graphene (ATRGO): The specific reaction steps are as follows: 400mg graphene oxide (GO) was ultrasonically dispersed into...
Embodiment 2
[0044] Graphene oxide and aminotriazine functionalized graphene according to Example 1.
[0045] The PANI-ATRGO hybrid material was prepared by in situ oxidative polymerization of aniline monomer in aqueous ATRGO solution. The mass-feeding ratio of ATRGO and aniline monomer was 5:95, and the obtained hybrid materials were named PANI-ATRGO5, respectively. The typical preparation process is as follows: After ATRGO is ultrasonicated in 1M dilute HCl solution for 30min, a uniform and stable dispersion is obtained. Add the above dispersion into a single-neck bottle, cool to 0°C in an ice-salt bath, add 1.632g of aniline monomer and stir thoroughly. Then 0.4g APS was added to the above dispersion, and reacted at 0°C for 24h. Then filter with a polytetrafluoroethylene (PTFE) membrane with a pore size of 0.22 μm, and wash with deionized water, ethanol, and n-hexane repeatedly until the filtrate becomes colorless. Pure PANI is prepared by the same preparation process, and the result...
Embodiment 3
[0048] Graphene oxide and aminotriazine functionalized graphene according to Example 1.
[0049] The PANI-ATRGO hybrid material was prepared by in situ oxidative polymerization of aniline monomer in aqueous ATRGO solution. The mass ratio of ATRGO and aniline monomer was 10:90, and the obtained hybrid materials were named PANI-ATRGO10, respectively. The typical preparation process is as follows: After ATRGO is ultrasonicated in 1M dilute HCl solution for 30min, a uniform and stable dispersion is obtained. Add the above dispersion into a single-neck bottle, cool to 0°C in an ice-salt bath, add 2.448g of aniline monomer and stir thoroughly. Then 0.6g APS was added to the above dispersion, and reacted at 0°C for 24h. Then filter with a polytetrafluoroethylene (PTFE) membrane with a pore size of 0.22 μm, and wash with deionized water, ethanol, and n-hexane repeatedly until the filtrate becomes colorless. Pure PANI is prepared by the same preparation process, and the resulting pr...
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