Ruthenium dioxide nanometer cluster/carbon composite material and preparation method thereof

A technology of carbon composite materials and nano-clusters, which is applied in nanotechnology, nanotechnology, hybrid/electric double-layer capacitor manufacturing, etc., can solve the problems of application field limitations of large specific surface area, and achieve excellent electronic conductivity and proton transport capabilities , easy large-scale production, great application potential effect

Active Publication Date: 2015-10-28
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the method is simple to operate, because the surface of the transition metal atoms is combined with the polymer, covering most of the surface active sites, it has brought many limitations to the application fields of energy storage, catalysis, and sensing that require a large specific surface area.

Method used

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  • Ruthenium dioxide nanometer cluster/carbon composite material and preparation method thereof
  • Ruthenium dioxide nanometer cluster/carbon composite material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0039] (a) Accurately weigh 10.35 mg of ruthenium chloride hydrate, add it to 50 ml of distilled water, stir and disperse, and fully dissolve the ruthenium chloride; simultaneously accurately weigh 189.15 mg of sodium borohydride and add it to 50 ml of distilled water, stir Disperse to fully dissolve sodium borohydride;

[0040] (b) Add the newly prepared aqueous solution of sodium borohydride dropwise to the ruthenium chloride solution, and simultaneously measure the pH change of the ruthenium precursor solution. When the pH rises to 4, stop the dropwise addition and continue stirring for a period of time to obtain a solution that can be stably dispersed in Ruthenium nanoclusters in water;

[0041](c) ultrasonically disperse 2.07 mg of carbon in water, then add the carbon dispersion to the prepared dispersion of ruthenium nanoclusters, stir and adsorb for 12 hours, filter, wash, and dry to obtain ruthenium nanoclusters / Carbon composite materials;

[0042] (d) Calcining the...

Embodiment 2

[0045] (a) Accurately weigh 2.07mg of ruthenium chloride hydrate, add it to 50ml of distilled water, stir to disperse, and fully dissolve the ruthenium chloride; simultaneously accurately weigh 134.85mg of potassium borohydride and add it to 50ml of distilled water, stir Disperse to fully dissolve potassium borohydride;

[0046] (b) Add the newly prepared aqueous solution of potassium borohydride dropwise to the ruthenium chloride solution, and simultaneously measure the pH change of the ruthenium precursor solution. When the pH rises to 4.2, stop the dropwise addition and continue stirring for a period of time to obtain a solution that can be stably dispersed in Ruthenium nanoclusters in water;

[0047] (c) ultrasonically disperse 0.6831 mg of carbon in water, then add the carbon dispersion to the prepared dispersion of ruthenium nanoclusters, stir and adsorb for 2 h, filter, wash, and dry to obtain ruthenium nanoclusters / Carbon composite materials;

[0048] (d) Calcining ...

Embodiment 3

[0051] (a) Accurately weigh 5.175mg of ruthenium chloride hydrate, add it to 50ml of distilled water, stir and disperse, and fully dissolve the ruthenium chloride; simultaneously accurately weigh 294.1mg of trisodium citrate and add it to 50ml of distilled water, Stir and disperse to fully dissolve trisodium citrate;

[0052] (b) Add the newly prepared trisodium citrate aqueous solution dropwise to the ruthenium chloride solution, and simultaneously measure the pH change of the ruthenium precursor solution. When the pH rises to 4.4, stop the dropwise addition and continue stirring for a period of time to obtain a stable dispersion. Ruthenium nanoclusters in water;

[0053] (c) ultrasonically disperse 5.175 mg of carbon in water, then add the carbon dispersion to the prepared dispersion of ruthenium nanoclusters, stir and adsorb for 4 h, filter, wash, and dry to obtain ruthenium nanoclusters / Carbon composite materials;

[0054] (d) Calcining the ruthenium nanocluster / carbon ...

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Abstract

A preparation method of a ruthenium dioxide nanometer cluster/carbon composite material comprises the following steps: preparing a ruthenium precursor solution and simultaneously preparing a fresh reducing agent; adding aqueous solution of the prepared fresh reducing agent to the ruthenium precursor solution drop by drop, stopping the adding when a pH value is within the range from 4.0 to 5.2, then continuing stirring to obtain ruthenium nanometer clusters dispersed in the water; adding a carbon-based material or a dispersion liquid thereof in the water to the dispersion liquid of the ruthenium nanometer clusters, so as to obtain a ruthenium nanometer cluster/carbon composite material; and calcining the obtained ruthenium nanometer cluster/carbon composite material at a high temperature to obtain the ruthenium dioxide nanometer cluster/carbon composite material. The preparation method of the present invention is simple in process, high in yield, low in cost, and free from pollution; in addition, the prepared ruthenium dioxide nanometer cluster/carbon composite material is fine in dimension of active components, huge in specific surface area, and uniform in dispersion, thus wide application prospect can be achieved in the fields of energy storage, catalysis and so on.

Description

technical field [0001] The invention belongs to the technical field of inorganic nanometer materials, in particular to a ruthenium dioxide nanocluster / carbon composite material and a preparation method thereof. Background technique [0002] Ruthenium dioxide is an oxide with special properties. Compared with most oxides, ruthenium dioxide has excellent electrical conductivity. At the same time, ruthenium has all the compounds with different valence states from 0 to +8. Ruthenium dioxide has small internal stress and stable structure in the transition of different valence states. These properties determine that ruthenium dioxide has a wide range of applications in photocatalysis, hot spots, lithium batteries, super batteries, electrocatalysis, and chlorine analysis catalysis. application. At present, common methods for preparing ruthenium dioxide include ruthenium oxidation, hydrolysis, sol-gel method, electrochemical deposition method, thermochemical decomposition method an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/86H01G11/24H01G11/46B82Y30/00
CPCY02E60/13H01G11/86B82Y30/00H01G11/24H01G11/46
Inventor 谭强强王鹏飞徐宇兴
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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