Electrically driven copper base film and preparation method thereof
A thin film, copper-based technology, applied in the field of electro-actuated copper-based thin film and its preparation, can solve the problems of insufficient structural design optimization, poor cycle stability, slow response speed and other problems of actuation materials, and achieve excellent actuation performance, The effect of high stability and fast response
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Embodiment 1
[0036] Select a copper foil with a thickness of 15 μm, wash the copper foil twice with dilute hydrochloric acid, water, and ethanol in sequence, and dry it under nitrogen at 25°C before use; disperse graphite oxide (GO) into deionized water, and the concentration of the GO dispersion is 6mg / ml, adjust its pH value to 6 by dialysis; scrape a layer of GO dispersion with a thickness of 1.2mm on the surface of copper foil by scraping, and then oxidize it in an environment with a relative humidity of 75%. Reduction reaction, the reaction time is 24h, the reaction temperature is 25°C; the copper foil is placed in a drying oven at 25°C and dried for 12h, and the excess GO is naturally separated from the copper foil. Copper-based film; the film has an asymmetric structure with copper on one side and a composite of cuprous oxide and reduced graphite oxide (rGO) on the other.
[0037] figure 1 is the cross-sectional scanning electron microscope (SEM) of the copper-based thin film, f...
Embodiment 2
[0039] Select copper foil with a thickness of 10 μm, wash the copper foil once with dilute hydrochloric acid, water, and ethanol in sequence, and dry it under nitrogen at 20°C before use; disperse graphite oxide (GO) into deionized water, and the concentration of GO dispersion is 5mg / ml, adjust its pH value to 6.5 by dialysis; scrape a layer of GO dispersion with a thickness of 1.0mm on the surface of copper foil by scraping, and then oxidize it in an environment with a relative humidity of 70%. Reduction reaction, the reaction time is 12h, the reaction temperature is 35°C; the copper foil is placed in a drying oven at 20°C for 10h, and the excess GO is naturally separated from the copper foil. Copper-based film; the film has an asymmetric structure with copper on one side and a composite of cuprous oxide and reduced graphite oxide (rGO) on the other. Figure 6 A digital photograph of the actuation behavior of a copper-based thin film in water by heat conduction.
Embodiment 3
[0041]Select a copper foil with a thickness of 20 μm, wash the copper foil with dilute hydrochloric acid, water, and ethanol in sequence, and dry it under nitrogen at 30 °C before use; disperse graphite oxide (GO) into deionized water, and the concentration of the GO dispersion is 7mg / ml, adjust its pH value to 5.5 by dialysis; scrape a layer of GO dispersion with a thickness of 1.5mm on the surface of copper foil by scraping, and then carry out redox in an environment with a relative humidity of 80% reaction, the reaction time is 36h, and the reaction temperature is 10°C; the copper foil is placed in a drying oven at 30°C and dried for 15h, and the excess GO is naturally separated from the copper foil. Base film; the film has an asymmetric structure with copper on one side and a composite of cuprous oxide and reduced graphite oxide (rGO) on the other. Figure 7 It is a data analysis diagram of the actuation behavior of the copper-based thin film through Joule heating.
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Abstract
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