Iron oxide nano-particle/graphene-polyimide-based carbon aerogel composite material and preparation method thereof
A polyimide-based carbon, iron oxide nanotechnology, applied in electrical components, hybrid capacitor electrodes, battery electrodes, etc., can solve the problems of large surface energy agglomeration, limited performance, etc., to achieve excellent electrical conductivity, improve detection performance, The effect of high porosity
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Embodiment 1
[0029] This embodiment includes the following steps:
[0030] The potassium hydroxide-activated graphene-polyimide-based carbon airgel was prepared using the method described in the inventor's Chinese patent application 201510442266.6, which is denoted as G-PIbasedCA.
[0031] Take 808mg of ferric nitrate nonahydrate and 300mg of urea and dissolve them in 40mL of N,N - In dimethylformamide, put 50 mg of the prepared carbon aerogel in the iron salt solution and let it stand for 1 hour. The iron salt solution added with carbon aerogel was poured into a 100mL hydrothermal kettle, and the hydrothermal kettle was placed in a blast oven at 120°C for reaction for 12h. After the reaction, the obtained iron oxide nanoparticles / graphene-polyimide-based carbon airgel composite was cleaned with deionized water and ethanol, and then dried in an oven at 100°C. In order to perfect the crystal form of iron oxide nanoparticles, the dried iron oxide nanoparticles / graphene-polyimide-based carb...
Embodiment 2
[0033] This embodiment includes the following steps:
[0034] The potassium hydroxide-activated graphene-polyimide-based carbon airgel was prepared using the method described in the inventor's Chinese patent application 201510442266.6, which is denoted as G-PIbasedCA.
[0035]Take 324mg of anhydrous ferric chloride and 300mg of urea and dissolve them in 40mL of N,N - In dimethylformamide, put 50 mg of the prepared carbon aerogel in the iron salt solution and let it stand for 1 hour. The iron salt solution added with carbon aerogel was poured into a 100mL hydrothermal kettle, and the hydrothermal kettle was placed in a blast oven at 120°C for reaction for 12h. After the reaction, the obtained iron oxide nanoparticles / graphene-polyimide-based carbon airgel composite was cleaned with deionized water and ethanol, and then dried in an oven at 100°C. In order to perfect the crystal form of iron oxide nanoparticles, the dried iron oxide nanoparticles / graphene-polyimide-based carbon...
Embodiment 3
[0037] As a control experiment, in the absence of potassium hydroxide-activated graphene-polyimide-based carbon airgel, 808 mg of ferric nitrate nonahydrate and 300 mg of urea were dissolved in 40 mL of N,N - in dimethylformamide, then pour this solution into a 50mL hydrothermal kettle, and place this hydrothermal kettle in a blast oven at 120°C for reaction for 12h. After the reaction finished, the obtained product was washed with deionized water and ethanol, and then dried in an oven at 100°C. In order to perfect the crystal form of iron oxide nanoparticles, the dried iron oxide nanoparticles were placed in a tube furnace and heat-treated at 600 °C for 2 h in a nitrogen atmosphere to finally obtain iron oxide nanoparticles, denoted as Fe 2 o 3 .
[0038] In the electrochemical test, a three-electrode test system was adopted, the prepared hybrid material modified platinum / carbon electrode was used as the working electrode, the saturated calomel electrode was used as the ref...
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