Spherical nickel cobalt oxide-ceric oxide composite electrode material with multi-stage structure and preparation method thereof
A ceria and composite electrode technology, which is applied in the fields of hybrid capacitor electrodes, hybrid/electric double layer capacitor manufacturing, nanotechnology for materials and surface science, etc. Supercapacitor energy storage devices, poor electronic conductivity and other problems, to achieve the effect of good application value
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[0020] Example 1
[0021] ①Add 0.50mmol nickel acetate tetrahydrate and 1.0mmol cobalt acetate tetrahydrate into a mixed solvent of 10mL 1,3-propanediol and 40mL isopropanol, stir to dissolve and mix well, then transfer the above reaction solution to the reactor at 160℃ Under the conditions of solvothermal reaction for 12 hours, after the reaction is completed, it is naturally cooled to room temperature, the product is centrifuged, washed with absolute ethanol several times and dried to obtain a spherical nickel-cobalt hydroxide with a hierarchical structure.
[0022] ② 0.0500g of cerium nitrate hexahydrate and 0.1g of spherical nickel-cobalt hydroxide with hierarchical structure were added to 20mL of absolute ethanol. After stirring and mixing, the above-mentioned reaction solution was transferred to the reactor, and the solvent was heated at 100℃. After the reaction is completed for 8 hours, it is naturally cooled to room temperature, the product is centrifuged, washed several ti...
Example Embodiment
[0024] Example 2
[0025] ①Add 0.25mmol nickel acetate tetrahydrate and 0.50mmol cobalt acetate tetrahydrate into a mixed solvent of 10mL 1,3-propanediol and 40mL isopropanol. After stirring to dissolve and mix well, the above reaction solution is transferred to the reactor at 160℃ Under the conditions of solvothermal reaction for 12 hours, after the reaction is completed, it is naturally cooled to room temperature, the product is centrifuged, washed with absolute ethanol several times and dried to obtain a spherical nickel-cobalt hydroxide with a hierarchical structure.
[0026] ② 0.0250g of cerium nitrate hexahydrate and 0.0500g of spherical nickel-cobalt hydroxide with hierarchical structure were added to 20mL of absolute ethanol. After stirring and mixing, the above reaction solution was transferred to the reactor, and the solvent was heated at 100℃. After the reaction is completed for 8 hours, it is naturally cooled to room temperature, the product is centrifuged, washed sever...
Example Embodiment
[0027] Example 3
[0028] ①Add 0.750mmol nickel acetate tetrahydrate and 1.50mmol cobalt acetate tetrahydrate into a mixed solvent of 20mL 1,3-propanediol and 30mL isopropanol. After stirring to dissolve and mix well, the above reaction solution is transferred to the reactor at 180°C Under the conditions of solvothermal reaction for 12 hours, after the reaction is completed, it is naturally cooled to room temperature, the product is centrifuged, washed with absolute ethanol several times and dried to obtain a spherical nickel-cobalt hydroxide with a hierarchical structure.
[0029] ② 0.0750g of cerium nitrate hexahydrate and 0.1500g of spherical nickel-cobalt hydroxide with multi-level structure were added to 20mL of absolute ethanol, after stirring and mixing, the above reaction liquid was transferred to the reactor, and the solvent was heated at 100℃ After the reaction is completed for 8 hours, it is naturally cooled to room temperature, the product is centrifuged, washed several...
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