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Ruthenium oxide hydrate-ruthenium nanoparticle composite material, preparation method and application thereof

A technology of composite materials and nanoparticles, applied in the direction of nanotechnology, nanotechnology, hybrid/electric double layer capacitor manufacturing, etc., can solve the problem of no interaction at the interface, large difference in surface properties, and no significant improvement in the stability of ruthenium-based materials and other problems to achieve the effect of improving dispersion and stability, helping to stabilize and disperse, and solving poor stability

Active Publication Date: 2021-02-23
NANJING UNIV OF INFORMATION SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, due to the large difference in the surface properties of ruthenium oxide hydrate and carbon-based materials, there is basically no interaction at the interface. This simple physical coating, adsorption or coating cannot give full play to the synergy between ruthenium oxide hydrate and carbon-based materials. effect, so that the capacitive behavior of the composite material cannot be effectively improved, and the stability of the ruthenium-based material has not been significantly improved

Method used

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  • Ruthenium oxide hydrate-ruthenium nanoparticle composite material, preparation method and application thereof
  • Ruthenium oxide hydrate-ruthenium nanoparticle composite material, preparation method and application thereof
  • Ruthenium oxide hydrate-ruthenium nanoparticle composite material, preparation method and application thereof

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Experimental program
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Effect test

Embodiment 1

[0031]Add 0.1 g of ruthenium trichloride trihydrate, 0.025 g of Tween-80 and 20 mL of water into a 25 mL hydrothermal reaction kettle, stir and dissolve, adjust the pH value to 7 with 3 mol / L sodium hydroxide solution, and conduct a hydrothermal reaction at 80 °C 2 hours. The precipitated product was suction-filtered, washed 3 times with 2 mL of deionized water, and dried at 40°C for 12 hours to obtain product I.

[0032] Add 0.1 g of ruthenium trichloride trihydrate, 0.2 g of carboxyhexanethiol and 20 mL of ethanol into a 50 mL beaker, stir and dissolve, then use 0.06 g of hydrazine hydrate for reduction reaction for 4 hours. Concentrate to 1 mL by rotary evaporation, centrifuge three times, and dry at 40°C for 12 hours to obtain product II.

[0033] Stir and mix the obtained product I, product II and 20mL water in a 25mL hydrothermal reaction kettle, adjust the pH=4 with 0.1mol / L dilute hydrochloric acid solution, perform a hydrothermal reaction at 60°C for 48 hours, and fi...

Embodiment 2

[0035] Add 0.3 g of ruthenium trichloride trihydrate, 0.05 g of Span-80 and 20 mL of water into a 25 mL hydrothermal reaction kettle. After stirring and dissolving, adjust the pH value to 6 with 3 mol / L sodium hydroxide solution. Hydrothermal reaction at 70 °C for 3 Hours. The precipitated product was suction-filtered, washed three times with 2 mL of deionized water, and dried at 40° C. for 24 hours to obtain product I.

[0036] Add 0.4 g of ruthenium trichloride trihydrate, 0.5 g of carboxybutanethiol and 20 mL of ethanol into a 50 mL beaker, stir and dissolve, then use 0.1 g of hydrazine hydrate for reduction reaction for 6 hours. Concentrate to 1 mL by rotary evaporation, centrifuge three times, and dry at 40°C for 24 hours to obtain product II.

[0037] Stir and mix the obtained product I, product II and 20 mL of water in a 25 mL hydrothermal reaction kettle, adjust the pH to 4 with 0.1 mol / L dilute hydrochloric acid solution, conduct a hydrothermal reaction at 70°C for 4...

Embodiment 3

[0039] Add 0.5 g of ruthenium trichloride trihydrate, 0.085 g of sorbitol and 20 mL of water into a 25 mL hydrothermal reaction kettle, stir and dissolve, adjust the pH value to 9 with 3 mol / L sodium hydroxide solution, and conduct a hydrothermal reaction at 90°C for 4 hours . The precipitated product was suction-filtered, washed three times with 2 mL of deionized water, and dried at 40° C. for 36 hours to obtain product I.

[0040] Add 0.2 g of ruthenium trichloride trihydrate, 0.1 g of carboxyhexanethiol and 20 mL of ethanol into a 50 mL beaker, stir to dissolve, and then use 0.02 g of hydrazine hydrate for reduction reaction for 12 hours. Concentrate to 1 mL by rotary evaporation, centrifuge three times, and dry at 40°C for 48 hours to obtain product II.

[0041] Stir and mix the obtained product I, product II and 20mL water in a 25mL hydrothermal reaction kettle, adjust the pH to 5 with 0.1mol / L dilute hydrochloric acid solution, conduct a hydrothermal reaction at 50°C fo...

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Abstract

The invention discloses a ruthenium oxide hydrate-ruthenium nanoparticle composite material, ruthenium nanoparticles are wrapped by organic carbon chains, and hydrogen bonds are formed between ruthenium oxide hydrate and the organic carbon chains wrapping the ruthenium nanoparticles; and meanwhile, the invention discloses a preparation method of the composite material and an application of the composite material in the field of capacitor electrodes. According to the invention, pseudocapacitance ruthenium oxide hydrate and the ruthenium nanoparticles coated with a double-electric-layer capacitance organic material are compounded, and the two are similar in structure and surface property and have a synergistic effect after being compounded so that the capacitance behavior of the material isremarkably improved, and the problem of poor stability of the ruthenium oxide hydrate is effectively solved.

Description

technical field [0001] The invention relates to a ruthenium oxide hydrate-ruthenium nanoparticle composite material and a preparation method and application thereof. Background technique [0002] A supercapacitor is an energy conversion and storage device with high energy density, fast energy storage capacity, and long-lasting cycle life. [0003] Generally, supercapacitors can be divided into electric double layer capacitors and faraday pseudocapacitors. Electric double-layer capacitors are generally made of carbon-based materials, which are characterized by large specific surface area, fast response speed, large discharge rate, and stable electrochemical performance. However, there are disadvantages of low specific capacitance and energy density in actual use. Faraday pseudocapacitors are usually metal oxides or conductive polymer materials, which are characterized by denser structures, larger specific capacitances, and higher energy densities. However, they also have dis...

Claims

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Application Information

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IPC IPC(8): H01G11/24H01G11/32H01G11/46H01G11/84B82Y30/00B82Y40/00
CPCH01G11/24H01G11/32H01G11/46H01G11/84B82Y30/00B82Y40/00
Inventor 郭彦李壮朱屹豪何辉
Owner NANJING UNIV OF INFORMATION SCI & TECH
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